23872621136 has 160 divisors (see below), whose sum is σ = 60056156160. Its totient is φ = 8927221248.

The previous prime is 23872621063. The next prime is 23872621147. The reversal of 23872621136 is 63112627832.

It is a junction number, because it is equal to n+sod(n) for n = 23872621093 and 23872621102.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20111135 + ... + 20112321.

It is an arithmetic number, because the mean of its divisors is an integer number (375350976).

Almost surely, 2^23872621136 is an apocalyptic number.

23872621136 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23872621136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30028078080).

23872621136 is an abundant number, since it is smaller than the sum of its proper divisors (36183535024).

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

23872621136 is a wasteful number, since it uses less digits than its factorization.

23872621136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1961 (or 1955 counting only the distinct ones).

The product of its digits is 145152, while the sum is 41.

The spelling of 23872621136 in words is "twenty-three billion, eight hundred seventy-two million, six hundred twenty-one thousand, one hundred thirty-six".