21882545988 has 24 divisors (see below), whose sum is σ = 51821354592. Its totient is φ = 7185313344.

The previous prime is 21882545969. The next prime is 21882545999. The reversal of 21882545988 is 88954528812.

It is a super-2 number, since 2×21882545988² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13607745 + ... + 13609352.

It is an arithmetic number, because the mean of its divisors is an integer number (2159223108).

Almost surely, 2^21882545988 is an apocalyptic number.

It is an amenable number.

21882545988 is an abundant number, since it is smaller than the sum of its proper divisors (29938808604).

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

21882545988 is a wasteful number, since it uses less digits than its factorization.

21882545988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27217171 (or 27217169 counting only the distinct ones).

The product of its digits is 14745600, while the sum is 60.

The spelling of 21882545988 in words is "twenty-one billion, eight hundred eighty-two million, five hundred forty-five thousand, nine hundred eighty-eight".