23151562556 has 24 divisors (see below), whose sum is σ = 41202994560. Its totient is φ = 11380896432.

The previous prime is 23151562549. The next prime is 23151562573. The reversal of 23151562556 is 65526515132.

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, 144866 + ... + 259401.

It is an arithmetic number, because the mean of its divisors is an integer number (1716791440).

Almost surely, 2^23151562556 is an apocalyptic number.

It is an amenable number.

23151562556 is a deficient number, since it is larger than the sum of its proper divisors (18051432004).

23151562556 is a wasteful number, since it uses less digits than its factorization.

23151562556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404513 (or 404511 counting only the distinct ones).

The product of its digits is 270000, while the sum is 41.

The spelling of 23151562556 in words is "twenty-three billion, one hundred fifty-one million, five hundred sixty-two thousand, five hundred fifty-six".