74781216552 has 64 divisors (see below), whose sum is σ = 215220251520. Its totient is φ = 21210098688.

The previous prime is 74781216539. The next prime is 74781216659. The reversal of 74781216552 is 25561218747.

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, 1601533 + ... + 1647564.

It is an arithmetic number, because the mean of its divisors is an integer number (3362816430).

Almost surely, 2^74781216552 is an apocalyptic number.

It is an amenable number.

74781216552 is an abundant number, since it is smaller than the sum of its proper divisors (140439034968).

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

74781216552 is a wasteful number, since it uses less digits than its factorization.

74781216552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3249250 (or 3249246 counting only the distinct ones).

The product of its digits is 940800, while the sum is 48.

The spelling of 74781216552 in words is "seventy-four billion, seven hundred eighty-one million, two hundred sixteen thousand, five hundred fifty-two".