23542539621 has 8 divisors (see below), whose sum is σ = 31414410240. Its totient is φ = 15682847712.

The previous prime is 23542539611. The next prime is 23542539623. The reversal of 23542539621 is 12693524532.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 23542539621 - 2³³ = 14952605029 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23542539623) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3040165 + ... + 3047898.

It is an arithmetic number, because the mean of its divisors is an integer number (3926801280).

Almost surely, 2^23542539621 is an apocalyptic number.

It is an amenable number.

23542539621 is a deficient number, since it is larger than the sum of its proper divisors (7871870619).

23542539621 is a wasteful number, since it uses less digits than its factorization.

23542539621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6089355.

The product of its digits is 388800, while the sum is 42.

The spelling of 23542539621 in words is "twenty-three billion, five hundred forty-two million, five hundred thirty-nine thousand, six hundred twenty-one".