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20752842828975 = 3524779151493531
BaseRepresentation
bin1001011011111111001011…
…10100110010110010101111
32201110221201022001202020120
410231333211310302302233
510210003310231011400
6112045420244420023
74241225535336165
oct455774564626257
981427638052216
1020752842828975
11668125a82a214
1223b20590a7613
13b76ca5464cca
1451a62b665235
1525ec6817cca0
hex12dfe5d32caf

20752842828975 has 96 divisors (see below), whose sum is σ = 35720029962240. Its totient is φ = 10624713840000.

The previous prime is 20752842828931. The next prime is 20752842828979. The reversal of 20752842828975 is 57982824825702.

It is not a de Polignac number, because 20752842828975 - 27 = 20752842828847 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20752842828979) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 41802960 + ... + 42296490.

It is an arithmetic number, because the mean of its divisors is an integer number (372083645440).

Almost surely, 220752842828975 is an apocalyptic number.

20752842828975 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20752842828975 is a deficient number, since it is larger than the sum of its proper divisors (14967187133265).

20752842828975 is a wasteful number, since it uses less digits than its factorization.

20752842828975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493821 (or 493816 counting only the distinct ones).

The product of its (nonzero) digits is 361267200, while the sum is 69.

The spelling of 20752842828975 in words is "twenty trillion, seven hundred fifty-two billion, eight hundred forty-two million, eight hundred twenty-eight thousand, nine hundred seventy-five".

Divisors: 1 3 5 15 25 47 75 79 141 151 235 237 395 453 705 755 1175 1185 1975 2265 3525 3713 3775 5925 7097 11139 11325 11929 18565 21291 35485 35787 55695 59645 92825 106455 177425 178935 278475 298225 493531 532275 560663 894675 1480593 1681989 2467655 2803315 7402965 8409945 12338275 14016575 23195957 37014825 38988949 42049725 69587871 74523181 115979785 116966847 194944745 223569543 347939355 372615905 579898925 584834235 974723725 1117847715 1739696775 1832480603 1863079525 2924171175 3502589507 5497441809 5589238575 5887331299 9162403015 10507768521 17512947535 17661993897 27487209045 29436656495 45812015075 52538842605 87564737675 88309969485 137436045225 147183282475 262694213025 276704571053 441549847425 830113713159 1383522855265 4150568565795 6917614276325 20752842828975