23513402542051 has 16 divisors (see below), whose sum is σ = 25368222043584. Its totient is φ = 21711055335424.

The previous prime is 23513402542031. The next prime is 23513402542087. The reversal of 23513402542051 is 15024520431532.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23513402542051 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 23513402542051.

It is not an unprimeable number, because it can be changed into a prime (23513402542031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10921266 + ... + 12895768.

It is an arithmetic number, because the mean of its divisors is an integer number (1585513877724).

Almost surely, 2^{23513402542051} is an apocalyptic number.

23513402542051 is a deficient number, since it is larger than the sum of its proper divisors (1854819501533).

23513402542051 is a wasteful number, since it uses less digits than its factorization.

23513402542051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1987790.

The product of its (nonzero) digits is 144000, while the sum is 37.

Adding to 23513402542051 its reverse (15024520431532), we get a palindrome (38537922973583).

The spelling of 23513402542051 in words is "twenty-three trillion, five hundred thirteen billion, four hundred two million, five hundred forty-two thousand, fifty-one".