74991631716 has 27 divisors (see below), whose sum is σ = 189566333593. Its totient is φ = 24996662880.

The previous prime is 74991631651. The next prime is 74991631717. The reversal of 74991631716 is 61713619947.

The square root of 74991631716 is 273846.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 35023625316 + 39968006400 = 187146^2 + 199920^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74991631717) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1620256 + ... + 1665896.

Almost surely, 2^74991631716 is an apocalyptic number.

74991631716 is the 273846-th square number.

It is an amenable number.

74991631716 is an abundant number, since it is smaller than the sum of its proper divisors (114574701877).

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

74991631716 is an frugal number, since it uses more digits than its factorization.

74991631716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91292 (or 45646 counting only the distinct ones).

The product of its digits is 1714608, while the sum is 54.

The spelling of 74991631716 in words is "seventy-four billion, nine hundred ninety-one million, six hundred thirty-one thousand, seven hundred sixteen".