21558316530192 has 40 divisors (see below), whose sum is σ = 59976342143424. Its totient is φ = 6633328162944.

The previous prime is 21558316530181. The next prime is 21558316530199. The reversal of 21558316530192 is 29103561385512.

It is a super-2 number, since 2×21558316530192² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21558316530199) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17274291468 + ... + 17274292715.

Almost surely, 2^{21558316530192} is an apocalyptic number.

It is an amenable number.

21558316530192 is an abundant number, since it is smaller than the sum of its proper divisors (38418025613232).

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

21558316530192 is a wasteful number, since it uses less digits than its factorization.

21558316530192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34548584207 (or 34548584201 counting only the distinct ones).

The product of its (nonzero) digits is 1944000, while the sum is 51.

The spelling of 21558316530192 in words is "twenty-one trillion, five hundred fifty-eight billion, three hundred sixteen million, five hundred thirty thousand, one hundred ninety-two".