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76538886671985 = 3513768491543797
BaseRepresentation
bin10001011001110010011001…
…001001101100111001110001
3101001000001020121111122111220
4101121302121021230321301
540013003114442000420
6430441251254055253
722056515651211243
oct2131623111547161
9331001217448456
1076538886671985
1122429a61186211
1287018ba34a529
1333927806ca83a
1414c8705238093
158cae4347d840
hex459c9926ce71

76538886671985 has 32 divisors (see below), whose sum is σ = 123358131384192. Its totient is φ = 40522111787520.

The previous prime is 76538886671957. The next prime is 76538886671987. The reversal of 76538886671985 is 58917668883567.

It is not a de Polignac number, because 76538886671985 - 28 = 76538886671729 is a prime.

It is not an unprimeable number, because it can be changed into a prime (76538886671987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 140477107 + ... + 141020903.

It is an arithmetic number, because the mean of its divisors is an integer number (3854941605756).

Almost surely, 276538886671985 is an apocalyptic number.

It is an amenable number.

76538886671985 is a deficient number, since it is larger than the sum of its proper divisors (46819244712207).

76538886671985 is a wasteful number, since it uses less digits than its factorization.

76538886671985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 612433.

The product of its digits is 29262643200, while the sum is 87.

The spelling of 76538886671985 in words is "seventy-six trillion, five hundred thirty-eight billion, eight hundred eighty-six million, six hundred seventy-one thousand, nine hundred eighty-five".

Divisors: 1 3 5 15 137 411 685 2055 68491 205473 342455 543797 1027365 1631391 2718985 8156955 9383267 28149801 46916335 74500189 140749005 223500567 372500945 1117502835 37245200327 111735600981 186226001635 558678004905 5102592444799 15307777334397 25512962223995 76538886671985