74504081665 has 16 divisors (see below), whose sum is σ = 97165530000. Its totient is φ = 54513637632.

The previous prime is 74504081653. The next prime is 74504081671. The reversal of 74504081665 is 56618040547.

It can be written as a sum of positive squares in 8 ways, for example, as 84787264 + 74419294401 = 9208^2 + 272799^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74504081665 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5250790 + ... + 5264959.

It is an arithmetic number, because the mean of its divisors is an integer number (6072845625).

Almost surely, 2^74504081665 is an apocalyptic number.

It is an amenable number.

74504081665 is a deficient number, since it is larger than the sum of its proper divisors (22661448335).

74504081665 is a wasteful number, since it uses less digits than its factorization.

74504081665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10515876.

The product of its (nonzero) digits is 806400, while the sum is 46.

The spelling of 74504081665 in words is "seventy-four billion, five hundred four million, eighty-one thousand, six hundred sixty-five".