21130166456524 has 6 divisors (see below), whose sum is σ = 36977791298924. Its totient is φ = 10565083228260.

The previous prime is 21130166456519. The next prime is 21130166456543. The reversal of 21130166456524 is 42565466103112.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2641270807062 + ... + 2641270807069.

Almost surely, 2^{21130166456524} is an apocalyptic number.

It is an amenable number.

21130166456524 is a deficient number, since it is larger than the sum of its proper divisors (15847624842400).

21130166456524 is a wasteful number, since it uses less digits than its factorization.

21130166456524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5282541614135 (or 5282541614133 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 46.

The spelling of 21130166456524 in words is "twenty-one trillion, one hundred thirty billion, one hundred sixty-six million, four hundred fifty-six thousand, five hundred twenty-four".