74479918457538 has 36 divisors (see below), whose sum is σ = 177377106083814. Its totient is φ = 22569672259200.

The previous prime is 74479918457521. The next prime is 74479918457557. The reversal of 74479918457538 is 83575481997447.

74479918457538 is a `hidden beast` number, since 7 + 4 + 4 + 7 + 9 + 9 + 1 + 8 + 4 + 575 + 38 = 666.

It can be written as a sum of positive squares in only one way, i.e., 74444920653609 + 34997803929 = 8628147^2 + 187077^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 17098234383 + ... + 17098238738.

Almost surely, 2^{74479918457538} is an apocalyptic number.

74479918457538 is an abundant number, since it is smaller than the sum of its proper divisors (102897187626276).

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

74479918457538 is a wasteful number, since it uses less digits than its factorization.

74479918457538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34196473151 (or 34196473137 counting only the distinct ones).

The product of its digits is 8534937600, while the sum is 81.

The spelling of 74479918457538 in words is "seventy-four trillion, four hundred seventy-nine billion, nine hundred eighteen million, four hundred fifty-seven thousand, five hundred thirty-eight".