2479721032369 has 21 divisors (see below), whose sum is σ = 2893634642361. Its totient is φ = 2125012204980.

The previous prime is 2479721032297. The next prime is 2479721032379. The reversal of 2479721032369 is 9632301279742.

The square root of 2479721032369 is 1574713.

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

It is not a de Polignac number, because 2479721032369 - 2¹⁷ = 2479720901297 is a prime.

It is a super-2 number, since 2×2479721032369² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2479721032379) by changing a digit.

It is a polite number, since it can be written in 20 ways as a sum of consecutive naturals, for example, 540124264 + ... + 540128854.

Almost surely, 2^{2479721032369} is an apocalyptic number.

2479721032369 is the 1574713-rd square number.

2479721032369 is the 787357-th centered octagonal number.

It is an amenable number.

2479721032369 is a deficient number, since it is larger than the sum of its proper divisors (413913609992).

2479721032369 is an frugal number, since it uses more digits than its factorization.

2479721032369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9224 (or 4598 counting only the distinct ones).

The product of its (nonzero) digits is 6858432, while the sum is 55.

The spelling of 2479721032369 in words is "two trillion, four hundred seventy-nine billion, seven hundred twenty-one million, thirty-two thousand, three hundred sixty-nine".