75921636209913 has 32 divisors (see below), whose sum is σ = 121149653184000. Its totient is φ = 46712861854848.

The previous prime is 75921636209857. The next prime is 75921636209927. The reversal of 75921636209913 is 31990263612957.

75921636209913 is a `hidden beast` number, since 7 + 59 + 216 + 362 + 0 + 9 + 9 + 1 + 3 = 666.

It is not a de Polignac number, because 75921636209913 - 2²⁸ = 75921367774457 is a prime.

It is not an unprimeable number, because it can be changed into a prime (75921636209113) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16837713 + ... + 20865086.

It is an arithmetic number, because the mean of its divisors is an integer number (3785926662000).

Almost surely, 2^{75921636209913} is an apocalyptic number.

It is an amenable number.

75921636209913 is a deficient number, since it is larger than the sum of its proper divisors (45228016974087).

75921636209913 is a wasteful number, since it uses less digits than its factorization.

75921636209913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37708558 (or 37708552 counting only the distinct ones).

The product of its (nonzero) digits is 33067440, while the sum is 63.

The spelling of 75921636209913 in words is "seventy-five trillion, nine hundred twenty-one billion, six hundred thirty-six million, two hundred nine thousand, nine hundred thirteen".