23153554521 has 24 divisors (see below), whose sum is σ = 33749834976. Its totient is φ = 15294913920.

The previous prime is 23153554519. The next prime is 23153554553. The reversal of 23153554521 is 12545535132.

23153554521 is a `hidden beast` number, since 2 + 3 + 1 + 53 + 554 + 52 + 1 = 666.

It is not a de Polignac number, because 23153554521 - 2¹ = 23153554519 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23153554511) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 790881 + ... + 819633.

It is an arithmetic number, because the mean of its divisors is an integer number (1406243124).

Almost surely, 2^23153554521 is an apocalyptic number.

It is an amenable number.

23153554521 is a deficient number, since it is larger than the sum of its proper divisors (10596280455).

23153554521 is a wasteful number, since it uses less digits than its factorization.

23153554521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29573 (or 29570 counting only the distinct ones).

The product of its digits is 90000, while the sum is 36.

The spelling of 23153554521 in words is "twenty-three billion, one hundred fifty-three million, five hundred fifty-four thousand, five hundred twenty-one".