74603431644 has 48 divisors (see below), whose sum is σ = 201460761600. Its totient is φ = 21045450816.

The previous prime is 74603431549. The next prime is 74603431667. The reversal of 74603431644 is 44613430647.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 74603431596 and 74603431605.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5614479 + ... + 5627750.

It is an arithmetic number, because the mean of its divisors is an integer number (4197099200).

Almost surely, 2^74603431644 is an apocalyptic number.

It is an amenable number.

74603431644 is an abundant number, since it is smaller than the sum of its proper divisors (126857329956).

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

74603431644 is a wasteful number, since it uses less digits than its factorization.

74603431644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11242322 (or 11242320 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 42.

The spelling of 74603431644 in words is "seventy-four billion, six hundred three million, four hundred thirty-one thousand, six hundred forty-four".