23132505451 has 18 divisors (see below), whose sum is σ = 25915818740. Its totient is φ = 20632463280.

The previous prime is 23132505439. The next prime is 23132505457. The reversal of 23132505451 is 15450523132.

It is not a de Polignac number, because 23132505451 - 2⁵ = 23132505419 is a prime.

It is a super-2 number, since 2×23132505451² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23132505457) 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 17 ways as a sum of consecutive naturals, for example, 305860 + ... + 373918.

Almost surely, 2^23132505451 is an apocalyptic number.

23132505451 is a deficient number, since it is larger than the sum of its proper divisors (2783313289).

23132505451 is an equidigital number, since it uses as much as digits as its factorization.

23132505451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68187 (or 68123 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 31.

The spelling of 23132505451 in words is "twenty-three billion, one hundred thirty-two million, five hundred five thousand, four hundred fifty-one".