21980271589488 has 100 divisors (see below), whose sum is σ = 63618990491320. Its totient is φ = 7326560543616.

The previous prime is 21980271589483. The next prime is 21980271589511. The reversal of 21980271589488 is 88498517208912.

21980271589488 is a `hidden beast` number, since 2 + 1 + 98 + 0 + 2 + 7 + 1 + 58 + 9 + 488 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21980271589483) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 52849806 + ... + 53264082.

Almost surely, 2^{21980271589488} is an apocalyptic number.

It is an amenable number.

21980271589488 is an abundant number, since it is smaller than the sum of its proper divisors (41638718901832).

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

21980271589488 is a wasteful number, since it uses less digits than its factorization.

21980271589488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455236 (or 455221 counting only the distinct ones).

The product of its (nonzero) digits is 185794560, while the sum is 72.

The spelling of 21980271589488 in words is "twenty-one trillion, nine hundred eighty billion, two hundred seventy-one million, five hundred eighty-nine thousand, four hundred eighty-eight".