75059068721 has 24 divisors (see below), whose sum is σ = 97272481320. Its totient is φ = 57339539712.

The previous prime is 75059068673. The next prime is 75059068741. The reversal of 75059068721 is 12786095057.

It can be written as a sum of positive squares in 4 ways, for example, as 4971801121 + 70087267600 = 70511^2 + 264740^2 .

It is a de Polignac number, because none of the positive numbers 2^k-75059068721 is a prime.

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 75059068721.

It is not an unprimeable number, because it can be changed into a prime (75059068741) 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 23 ways as a sum of consecutive naturals, for example, 2013116 + ... + 2050061.

It is an arithmetic number, because the mean of its divisors is an integer number (4053020055).

Almost surely, 2^75059068721 is an apocalyptic number.

It is an amenable number.

75059068721 is a deficient number, since it is larger than the sum of its proper divisors (22213412599).

75059068721 is a wasteful number, since it uses less digits than its factorization.

75059068721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4063233 (or 4063226 counting only the distinct ones).

The product of its (nonzero) digits is 1058400, while the sum is 50.

The spelling of 75059068721 in words is "seventy-five billion, fifty-nine million, sixty-eight thousand, seven hundred twenty-one".