74939389168 has 30 divisors (see below), whose sum is σ = 165943634136. Its totient is φ = 32115639456.

The previous prime is 74939389157. The next prime is 74939389169. The reversal of 74939389168 is 86198393947.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74939389169) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2884171 + ... + 2910037.

Almost surely, 2^74939389168 is an apocalyptic number.

It is an amenable number.

74939389168 is an abundant number, since it is smaller than the sum of its proper divisors (91004244968).

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

74939389168 is an frugal number, since it uses more digits than its factorization.

74939389168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51749 (or 25876 counting only the distinct ones).

The product of its digits is 70543872, while the sum is 67.

The spelling of 74939389168 in words is "seventy-four billion, nine hundred thirty-nine million, three hundred eighty-nine thousand, one hundred sixty-eight".