74915966516 has 12 divisors (see below), whose sum is σ = 131104861188. Its totient is φ = 37457434752.

The previous prime is 74915966513. The next prime is 74915966569. The reversal of 74915966516 is 61566951947.

It can be written as a sum of positive squares in 2 ways, for example, as 16736596900 + 58179369616 = 129370^2 + 241204^2 .

It is a super-2 number, since 2×74915966516² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74915966513) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 441020 + ... + 586796.

It is an arithmetic number, because the mean of its divisors is an integer number (10925405099).

Almost surely, 2^74915966516 is an apocalyptic number.

It is an amenable number.

74915966516 is a deficient number, since it is larger than the sum of its proper divisors (56188894672).

74915966516 is a wasteful number, since it uses less digits than its factorization.

74915966516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274258 (or 274256 counting only the distinct ones).

The product of its digits is 12247200, while the sum is 59.

The spelling of 74915966516 in words is "seventy-four billion, nine hundred fifteen million, nine hundred sixty-six thousand, five hundred sixteen".