74836768520 has 16 divisors (see below), whose sum is σ = 168382729260. Its totient is φ = 29934707392.

The previous prime is 74836768507. The next prime is 74836768541. The reversal of 74836768520 is 2586763847.

It can be written as a sum of positive squares in 2 ways, for example, as 68103253156 + 6733515364 = 260966^2 + 82058^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 935459567 + ... + 935459646.

Almost surely, 2^74836768520 is an apocalyptic number.

It is an amenable number.

74836768520 is an abundant number, since it is smaller than the sum of its proper divisors (93545960740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

74836768520 is a wasteful number, since it uses less digits than its factorization.

74836768520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1870919224 (or 1870919220 counting only the distinct ones).

The product of its (nonzero) digits is 13547520, while the sum is 56.

The spelling of 74836768520 in words is "seventy-four billion, eight hundred thirty-six million, seven hundred sixty-eight thousand, five hundred twenty".