374612579817921 has 81 divisors (see below), whose sum is σ = 565479250810747. Its totient is φ = 238972763527680.

The previous prime is 374612579817907. The next prime is 374612579817923. The reversal of 374612579817921 is 129718975216473.

The square root of 374612579817921 is 19354911.

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

374612579817921 is a `hidden beast` number, since 3 + 7 + 4 + 6 + 12 + 579 + 8 + 17 + 9 + 21 = 666.

It can be written as a sum of positive squares in 13 ways, for example, as 350335634735025 + 24276945082896 = 18717255^2 + 4927164^2 .

It is not a de Polignac number, because 374612579817921 - 2²¹ = 374612577720769 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 374612579817921.

It is not an unprimeable number, because it can be changed into a prime (374612579817923) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 126174663325 + ... + 126174666293.

Almost surely, 2^{374612579817921} is an apocalyptic number.

374612579817921 is the 19354911-st square number.

374612579817921 is the 9677456-th centered octagonal number.

It is an amenable number.

374612579817921 is a deficient number, since it is larger than the sum of its proper divisors (190866670992826).

374612579817921 is an frugal number, since it uses more digits than its factorization.

374612579817921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6132 (or 3066 counting only the distinct ones).

The product of its digits is 320060160, while the sum is 72.

The spelling of 374612579817921 in words is "three hundred seventy-four trillion, six hundred twelve billion, five hundred seventy-nine million, eight hundred seventeen thousand, nine hundred twenty-one".