23007732489 has 81 divisors (see below), whose sum is σ = 40118732199. Its totient is φ = 12668564160.

The previous prime is 23007732443. The next prime is 23007732497. The reversal of 23007732489 is 98423770032.

The square root of 23007732489 is 151683.

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., 4672406025 + 18335326464 = 68355^2 + 135408^2 .

It is not a de Polignac number, because 23007732489 - 2⁷ = 23007732361 is a prime.

It is a super-2 number, since 2×23007732489² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23007732409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 98745517 + ... + 98745749.

Almost surely, 2^23007732489 is an apocalyptic number.

23007732489 is the 151683-rd square number.

23007732489 is the 75842-nd centered octagonal number.

It is an amenable number.

23007732489 is a deficient number, since it is larger than the sum of its proper divisors (17110999710).

23007732489 is an equidigital number, since it uses as much as digits as its factorization.

23007732489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 548 (or 274 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 45.

The spelling of 23007732489 in words is "twenty-three billion, seven million, seven hundred thirty-two thousand, four hundred eighty-nine".