23621251072 has 52 divisors (see below), whose sum is σ = 47444893120. Its totient is φ = 11758583808.

The previous prime is 23621251019. The next prime is 23621251111. The reversal of 23621251072 is 27015212632.

It is a super-2 number, since 2×23621251072² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 925393 + ... + 950575.

Almost surely, 2^23621251072 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23621251072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23722446560).

23621251072 is an abundant number, since it is smaller than the sum of its proper divisors (23823642048).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23621251072 is an equidigital number, since it uses as much as digits as its factorization.

23621251072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25436 (or 25414 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 31.

The spelling of 23621251072 in words is "twenty-three billion, six hundred twenty-one million, two hundred fifty-one thousand, seventy-two".