23513234451 has 16 divisors (see below), whose sum is σ = 36798061824. Its totient is φ = 13072994784.

The previous prime is 23513234287. The next prime is 23513234461. The reversal of 23513234451 is 15443231532.

It is not a de Polignac number, because 23513234451 - 2¹¹ = 23513232403 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23513234461) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15130005 + ... + 15131558.

It is an arithmetic number, because the mean of its divisors is an integer number (2299878864).

Almost surely, 2^23513234451 is an apocalyptic number.

23513234451 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

23513234451 is a deficient number, since it is larger than the sum of its proper divisors (13284827373).

23513234451 is a wasteful number, since it uses less digits than its factorization.

23513234451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30261610.

The product of its digits is 43200, while the sum is 33.

Adding to 23513234451 its reverse (15443231532), we get a palindrome (38956465983).

The spelling of 23513234451 in words is "twenty-three billion, five hundred thirteen million, two hundred thirty-four thousand, four hundred fifty-one".