21480922986 has 32 divisors (see below), whose sum is σ = 45230192640. Its totient is φ = 6782369904.

The previous prime is 21480922973. The next prime is 21480922993. The reversal of 21480922986 is 68922908412.

It is a super-2 number, since 2×21480922986² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1011271 + ... + 1032293.

It is an arithmetic number, because the mean of its divisors is an integer number (1413443520).

Almost surely, 2^21480922986 is an apocalyptic number.

21480922986 is an abundant number, since it is smaller than the sum of its proper divisors (23749269654).

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

21480922986 is a wasteful number, since it uses less digits than its factorization.

21480922986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30010.

The product of its (nonzero) digits is 995328, while the sum is 51.

The spelling of 21480922986 in words is "twenty-one billion, four hundred eighty million, nine hundred twenty-two thousand, nine hundred eighty-six".