74544616731 has 24 divisors (see below), whose sum is σ = 107700627216. Its totient is φ = 45591543360.

The previous prime is 74544616723. The next prime is 74544616753. The reversal of 74544616731 is 13761644547.

It is not a de Polignac number, because 74544616731 - 2³ = 74544616723 is a prime.

It is a super-2 number, since 2×74544616731² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (74544616771) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1000221 + ... + 1072161.

It is an arithmetic number, because the mean of its divisors is an integer number (4487526134).

Almost surely, 2^74544616731 is an apocalyptic number.

74544616731 is a deficient number, since it is larger than the sum of its proper divisors (33156010485).

74544616731 is a wasteful number, since it uses less digits than its factorization.

74544616731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72283 (or 72120 counting only the distinct ones).

The product of its digits is 1693440, while the sum is 48.

The spelling of 74544616731 in words is "seventy-four billion, five hundred forty-four million, six hundred sixteen thousand, seven hundred thirty-one".