23315142556 has 24 divisors (see below), whose sum is σ = 42409135440. Its totient is φ = 11205839232.

The previous prime is 23315142491. The next prime is 23315142577. The reversal of 23315142556 is 65524151332.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 936721 + ... + 961288.

It is an arithmetic number, because the mean of its divisors is an integer number (1767047310).

Almost surely, 2^23315142556 is an apocalyptic number.

It is an amenable number.

23315142556 is a deficient number, since it is larger than the sum of its proper divisors (19093992884).

23315142556 is a wasteful number, since it uses less digits than its factorization.

23315142556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1898133 (or 1898131 counting only the distinct ones).

The product of its digits is 108000, while the sum is 37.

Adding to 23315142556 its reverse (65524151332), we get a palindrome (88839293888).

The spelling of 23315142556 in words is "twenty-three billion, three hundred fifteen million, one hundred forty-two thousand, five hundred fifty-six".