74670666381 has 12 divisors (see below), whose sum is σ = 108706903552. Its totient is φ = 49388471496.

The previous prime is 74670666361. The next prime is 74670666383. The reversal of 74670666381 is 18366607647.

It is not a de Polignac number, because 74670666381 - 2¹⁵ = 74670633613 is a prime.

It is a super-2 number, since 2×74670666381² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74670666383) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32663191 + ... + 32665476.

Almost surely, 2^74670666381 is an apocalyptic number.

It is an amenable number.

74670666381 is a deficient number, since it is larger than the sum of its proper divisors (34036237171).

74670666381 is a wasteful number, since it uses less digits than its factorization.

74670666381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65328800 (or 65328797 counting only the distinct ones).

The product of its (nonzero) digits is 6096384, while the sum is 54.

The spelling of 74670666381 in words is "seventy-four billion, six hundred seventy million, six hundred sixty-six thousand, three hundred eighty-one".