74915694231 has 96 divisors (see below), whose sum is σ = 129317368320. Its totient is φ = 38257680384.

The previous prime is 74915694209. The next prime is 74915694257. The reversal of 74915694231 is 13249651947.

It is a happy number.

It is not a de Polignac number, because 74915694231 - 2⁷ = 74915694103 is a prime.

It is a super-2 number, since 2×74915694231² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74915694281) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 7984615 + ... + 7993991.

It is an arithmetic number, because the mean of its divisors is an integer number (1347055920).

Almost surely, 2^74915694231 is an apocalyptic number.

74915694231 is a deficient number, since it is larger than the sum of its proper divisors (54401674089).

74915694231 is a wasteful number, since it uses less digits than its factorization.

74915694231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9573 (or 9566 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 51.

The spelling of 74915694231 in words is "seventy-four billion, nine hundred fifteen million, six hundred ninety-four thousand, two hundred thirty-one".