74904534816 has 24 divisors (see below), whose sum is σ = 196624404144. Its totient is φ = 24968178240.

The previous prime is 74904534781. The next prime is 74904534821. The reversal of 74904534816 is 61843540947.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×74904534816² (a number of 23 digits) contains 22 as substring.

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, 390127690 + ... + 390127881.

It is an arithmetic number, because the mean of its divisors is an integer number (8192683506).

Almost surely, 2^74904534816 is an apocalyptic number.

It is an amenable number.

74904534816 is an abundant number, since it is smaller than the sum of its proper divisors (121719869328).

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

74904534816 is a wasteful number, since it uses less digits than its factorization.

74904534816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 780255584 (or 780255576 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 51.

The spelling of 74904534816 in words is "seventy-four billion, nine hundred four million, five hundred thirty-four thousand, eight hundred sixteen".