74906394372 has 18 divisors (see below), whose sum is σ = 189346719198. Its totient is φ = 24968798112.

The previous prime is 74906394323. The next prime is 74906394397. The reversal of 74906394372 is 27349360947.

74906394372 is a `hidden beast` number, since 7 + 490 + 63 + 94 + 3 + 7 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 71260166916 + 3646227456 = 266946^2 + 60384^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×74906394372² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1040366553 + ... + 1040366624.

Almost surely, 2^74906394372 is an apocalyptic number.

It is an amenable number.

74906394372 is an abundant number, since it is smaller than the sum of its proper divisors (114440324826).

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

74906394372 is a wasteful number, since it uses less digits than its factorization.

74906394372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2080733187 (or 2080733182 counting only the distinct ones).

The product of its (nonzero) digits is 6858432, while the sum is 54.

The spelling of 74906394372 in words is "seventy-four billion, nine hundred six million, three hundred ninety-four thousand, three hundred seventy-two".