23975553021 has 8 divisors (see below), whose sum is σ = 36534176064. Its totient is φ = 13700316000.

The previous prime is 23975552987. The next prime is 23975553089. The reversal of 23975553021 is 12035557932.

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

It is not a de Polignac number, because 23975553021 - 2⁷ = 23975552893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23975554021) 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, 570846480 + ... + 570846521.

It is an arithmetic number, because the mean of its divisors is an integer number (4566772008).

Almost surely, 2^23975553021 is an apocalyptic number.

23975553021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

23975553021 is a deficient number, since it is larger than the sum of its proper divisors (12558623043).

23975553021 is a wasteful number, since it uses less digits than its factorization.

23975553021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1141693011.

The product of its (nonzero) digits is 283500, while the sum is 42.

The spelling of 23975553021 in words is "twenty-three billion, nine hundred seventy-five million, five hundred fifty-three thousand, twenty-one".