21876946224 has 80 divisors (see below), whose sum is σ = 66816318720. Its totient is φ = 6035016960.

The previous prime is 21876946193. The next prime is 21876946277. The reversal of 21876946224 is 42264967812.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1112842 + ... + 1132329.

It is an arithmetic number, because the mean of its divisors is an integer number (835203984).

Almost surely, 2^21876946224 is an apocalyptic number.

21876946224 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

21876946224 is an abundant number, since it is smaller than the sum of its proper divisors (44939372496).

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

21876946224 is a wasteful number, since it uses less digits than its factorization.

21876946224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2245218 (or 2245212 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 51.

The spelling of 21876946224 in words is "twenty-one billion, eight hundred seventy-six million, nine hundred forty-six thousand, two hundred twenty-four".