21824875980 has 96 divisors (see below), whose sum is σ = 68522731200. Its totient is φ = 5766557184.

The previous prime is 21824875931. The next prime is 21824876011. The reversal of 21824875980 is 8957842812.

21824875980 is a `hidden beast` number, since 2 + 1 + 8 + 2 + 48 + 7 + 598 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 126537 + ... + 244256.

It is an arithmetic number, because the mean of its divisors is an integer number (713778450).

Almost surely, 2^21824875980 is an apocalyptic number.

21824875980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21824875980 is an abundant number, since it is smaller than the sum of its proper divisors (46697855220).

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

21824875980 is a wasteful number, since it uses less digits than its factorization.

21824875980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370920 (or 370912 counting only the distinct ones).

The product of its (nonzero) digits is 2580480, while the sum is 54.

The spelling of 21824875980 in words is "twenty-one billion, eight hundred twenty-four million, eight hundred seventy-five thousand, nine hundred eighty".