74451642432 has 56 divisors (see below), whose sum is σ = 197030010816. Its totient is φ = 24811749888.

The previous prime is 74451642427. The next prime is 74451642527. The reversal of 74451642432 is 23424615447.

It is a happy number.

It is a super-3 number, since 3×74451642432³ (a number of 34 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 883813 + ... + 964379.

Almost surely, 2^74451642432 is an apocalyptic number.

It is an amenable number.

74451642432 is an abundant number, since it is smaller than the sum of its proper divisors (122578368384).

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

74451642432 is a wasteful number, since it uses less digits than its factorization.

74451642432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85395 (or 85385 counting only the distinct ones).

The product of its digits is 645120, while the sum is 42.

The spelling of 74451642432 in words is "seventy-four billion, four hundred fifty-one million, six hundred forty-two thousand, four hundred thirty-two".