74663644256 has 24 divisors (see below), whose sum is σ = 147201420240. Its totient is φ = 37279156608.

The previous prime is 74663644229. The next prime is 74663644277. The reversal of 74663644256 is 65244636647.

It is a junction number, because it is equal to n+sod(n) for n = 74663644198 and 74663644207.

It is a congruent number.

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, 1622756 + ... + 1668131.

It is an arithmetic number, because the mean of its divisors is an integer number (6133392510).

Almost surely, 2^74663644256 is an apocalyptic number.

It is an amenable number.

74663644256 is a deficient number, since it is larger than the sum of its proper divisors (72537775984).

74663644256 is a wasteful number, since it uses less digits than its factorization.

74663644256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3291606 (or 3291598 counting only the distinct ones).

The product of its digits is 17418240, while the sum is 53.

The spelling of 74663644256 in words is "seventy-four billion, six hundred sixty-three million, six hundred forty-four thousand, two hundred fifty-six".