74640020424 has 32 divisors (see below), whose sum is σ = 186841494720. Its totient is φ = 24847814336.

The previous prime is 74640020407. The next prime is 74640020443. The reversal of 74640020424 is 42402004647.

It is a super-2 number, since 2×74640020424² (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 7 ways as a sum of consecutive naturals, for example, 1993092 + ... + 2030195.

It is an arithmetic number, because the mean of its divisors is an integer number (5838796710).

Almost surely, 2^74640020424 is an apocalyptic number.

It is an amenable number.

74640020424 is an abundant number, since it is smaller than the sum of its proper divisors (112201474296).

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

74640020424 is a wasteful number, since it uses less digits than its factorization.

74640020424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4024069 (or 4024065 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 33.

The spelling of 74640020424 in words is "seventy-four billion, six hundred forty million, twenty thousand, four hundred twenty-four".