21876658692 has 48 divisors (see below), whose sum is σ = 61769393280. Its totient is φ = 5882798592.

The previous prime is 21876658673. The next prime is 21876658693. The reversal of 21876658692 is 29685667812.

It is not an unprimeable number, because it can be changed into a prime (21876658693) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7658467 + ... + 7661322.

It is an arithmetic number, because the mean of its divisors is an integer number (1286862360).

Almost surely, 2^21876658692 is an apocalyptic number.

It is an amenable number.

21876658692 is an abundant number, since it is smaller than the sum of its proper divisors (39892734588).

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

21876658692 is a wasteful number, since it uses less digits than its factorization.

21876658692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15319820 (or 15319818 counting only the distinct ones).

The product of its digits is 17418240, while the sum is 60.

The spelling of 21876658692 in words is "twenty-one billion, eight hundred seventy-six million, six hundred fifty-eight thousand, six hundred ninety-two".