21980251882 has 8 divisors (see below), whose sum is σ = 33188725152. Its totient is φ = 10917343500.

The previous prime is 21980251841. The next prime is 21980251903. The reversal of 21980251882 is 28815208912.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36390844 + ... + 36391447.

It is an arithmetic number, because the mean of its divisors is an integer number (4148590644).

Almost surely, 2^21980251882 is an apocalyptic number.

21980251882 is a deficient number, since it is larger than the sum of its proper divisors (11208473270).

21980251882 is a wasteful number, since it uses less digits than its factorization.

21980251882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72782444.

The product of its (nonzero) digits is 184320, while the sum is 46.

The spelling of 21980251882 in words is "twenty-one billion, nine hundred eighty million, two hundred fifty-one thousand, eight hundred eighty-two".