21876658752 has 56 divisors (see below), whose sum is σ = 62334461056. Its totient is φ = 6731278848.

The previous prime is 21876658721. The next prime is 21876658757. The reversal of 21876658752 is 25785667812.

It is a junction number, because it is equal to n+sod(n) for n = 21876658692 and 21876658701.

It is not an unprimeable number, because it can be changed into a prime (21876658757) 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, 4379848 + ... + 4384839.

It is an arithmetic number, because the mean of its divisors is an integer number (1113115376).

Almost surely, 2^21876658752 is an apocalyptic number.

It is an amenable number.

21876658752 is an abundant number, since it is smaller than the sum of its proper divisors (40457802304).

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

21876658752 is a wasteful number, since it uses less digits than its factorization.

21876658752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8764715 (or 8764705 counting only the distinct ones).

The product of its digits is 11289600, while the sum is 57.

The spelling of 21876658752 in words is "twenty-one billion, eight hundred seventy-six million, six hundred fifty-eight thousand, seven hundred fifty-two".