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20576285885875 = 531315212411837
BaseRepresentation
bin1001010110110110010100…
…01101100000010110110011
32200212001222202000202010211
410223123022031200112303
510144110213141322000
6111432340520404551
74222405355152636
oct453331215402663
980761882022124
1020576285885875
116613398a61705
1223839a4616757
13b63448c40645
14511c7cc43c1d
1525a382d847ba
hex12b6ca3605b3

20576285885875 has 32 divisors (see below), whose sum is σ = 25924904546112. Its totient is φ = 16304011360000.

The previous prime is 20576285885867. The next prime is 20576285885917. The reversal of 20576285885875 is 57858858267502.

It is not a de Polignac number, because 20576285885875 - 23 = 20576285885867 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7325457 + ... + 9737293.

It is an arithmetic number, because the mean of its divisors is an integer number (810153267066).

Almost surely, 220576285885875 is an apocalyptic number.

20576285885875 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20576285885875 is a deficient number, since it is larger than the sum of its proper divisors (5348618660237).

20576285885875 is a wasteful number, since it uses less digits than its factorization.

20576285885875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2412504 (or 2412494 counting only the distinct ones).

The product of its (nonzero) digits is 3010560000, while the sum is 76.

The spelling of 20576285885875 in words is "twenty trillion, five hundred seventy-six billion, two hundred eighty-five million, eight hundred eighty-five thousand, eight hundred seventy-five".

Divisors: 1 5 25 125 131 521 655 2605 3275 13025 16375 65125 68251 341255 1706275 2411837 8531375 12059185 60295925 301479625 315950647 1256567077 1579753235 6282835385 7898766175 31414176925 39493830875 157070884625 164610287087 823051435435 4115257177175 20576285885875