74997951136 has 48 divisors (see below), whose sum is σ = 150967200384. Its totient is φ = 36658911744.

The previous prime is 74997951131. The next prime is 74997951137. The reversal of 74997951136 is 63115979947.

It is not an unprimeable number, because it can be changed into a prime (74997951131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1299796 + ... + 1356268.

It is an arithmetic number, because the mean of its divisors is an integer number (3145150008).

Almost surely, 2^74997951136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74997951136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75483600192).

74997951136 is an abundant number, since it is smaller than the sum of its proper divisors (75969249248).

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

74997951136 is a wasteful number, since it uses less digits than its factorization.

74997951136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57413 (or 57405 counting only the distinct ones).

The product of its digits is 12859560, while the sum is 61.

The spelling of 74997951136 in words is "seventy-four billion, nine hundred ninety-seven million, nine hundred fifty-one thousand, one hundred thirty-six".