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75061681870 = 2576743936457
BaseRepresentation
bin100010111101000000…
…1100101111011001110
321011202011210112001111
41011322001211323032
52212211242304440
654252144202234
75265045524440
oct1057201457316
9234664715044
1075061681870
11299193a962a
121266a00937a
137102cc1896
1438c0d72490
151e44b9d4ea
hex117a065ece

75061681870 has 64 divisors (see below), whose sum is σ = 157078563840. Its totient is φ = 25292881152.

The previous prime is 75061681831. The next prime is 75061681957. The reversal of 75061681870 is 7818616057.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2040682 + ... + 2077138.

It is an arithmetic number, because the mean of its divisors is an integer number (2454352560).

Almost surely, 275061681870 is an apocalyptic number.

75061681870 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

75061681870 is an abundant number, since it is smaller than the sum of its proper divisors (82016881970).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

75061681870 is a wasteful number, since it uses less digits than its factorization.

75061681870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36977.

The product of its (nonzero) digits is 564480, while the sum is 49.

The spelling of 75061681870 in words is "seventy-five billion, sixty-one million, six hundred eighty-one thousand, eight hundred seventy".

Divisors: 1 2 5 7 10 14 35 67 70 134 335 439 469 670 878 938 2195 2345 3073 4390 4690 6146 15365 29413 30730 36457 58826 72914 147065 182285 205891 255199 294130 364570 411782 510398 1029455 1275995 2058910 2442619 2551990 4885238 12213095 16004623 17098333 24426190 32009246 34196666 80023115 85491665 112032361 160046230 170983330 224064722 560161805 1072309741 1120323610 2144619482 5361548705 7506168187 10723097410 15012336374 37530840935 75061681870