23021553405 has 32 divisors (see below), whose sum is σ = 38050329600. Its totient is φ = 11873456640.

The previous prime is 23021553389. The next prime is 23021553413. The reversal of 23021553405 is 50435512032.

It is not a de Polignac number, because 23021553405 - 2⁴ = 23021553389 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 649071 + ... + 683619.

It is an arithmetic number, because the mean of its divisors is an integer number (1189072800).

Almost surely, 2^23021553405 is an apocalyptic number.

It is an amenable number.

23021553405 is a deficient number, since it is larger than the sum of its proper divisors (15028776195).

23021553405 is a wasteful number, since it uses less digits than its factorization.

23021553405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36021.

The product of its (nonzero) digits is 18000, while the sum is 30.

The spelling of 23021553405 in words is "twenty-three billion, twenty-one million, five hundred fifty-three thousand, four hundred five".