74431323128 has 16 divisors (see below), whose sum is σ = 139561748280. Its totient is φ = 37214856928.

The previous prime is 74431323067. The next prime is 74431323137. The reversal of 74431323128 is 82132313447.

It is a junction number, because it is equal to n+sod(n) for n = 74431323091 and 74431323100.

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, 512075 + ... + 641157.

Almost surely, 2^74431323128 is an apocalyptic number.

It is an amenable number.

74431323128 is a deficient number, since it is larger than the sum of its proper divisors (65130425152).

74431323128 is a wasteful number, since it uses less digits than its factorization.

74431323128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201166 (or 201162 counting only the distinct ones).

The product of its digits is 96768, while the sum is 38.

The spelling of 74431323128 in words is "seventy-four billion, four hundred thirty-one million, three hundred twenty-three thousand, one hundred twenty-eight".