21880627824 has 80 divisors (see below), whose sum is σ = 63652783104. Its totient is φ = 6416601600.

The previous prime is 21880627817. The next prime is 21880627883. The reversal of 21880627824 is 42872608812.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

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, 652029 + ... + 684764.

Almost surely, 2^21880627824 is an apocalyptic number.

21880627824 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

21880627824 is an abundant number, since it is smaller than the sum of its proper divisors (41772155280).

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

21880627824 is a wasteful number, since it uses less digits than its factorization.

21880627824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1336846 (or 1336840 counting only the distinct ones).

The product of its (nonzero) digits is 688128, while the sum is 48.

The spelling of 21880627824 in words is "twenty-one billion, eight hundred eighty million, six hundred twenty-seven thousand, eight hundred twenty-four".