21364117471530 has 24 divisors (see below), whose sum is σ = 55546705426212. Its totient is φ = 5697097992384.

The previous prime is 21364117471511. The next prime is 21364117471601. The reversal of 21364117471530 is 3517471146312.

21364117471530 is a `hidden beast` number, since 2 + 1 + 3 + 6 + 41 + 1 + 7 + 4 + 71 + 530 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 20429378492769 + 934738978761 = 4519887^2 + 966819^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 118689541419 + ... + 118689541598.

Almost surely, 2^{21364117471530} is an apocalyptic number.

21364117471530 is an abundant number, since it is smaller than the sum of its proper divisors (34182587954682).

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

21364117471530 is a wasteful number, since it uses less digits than its factorization.

21364117471530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237379083030 (or 237379083027 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 45.

The spelling of 21364117471530 in words is "twenty-one trillion, three hundred sixty-four billion, one hundred seventeen million, four hundred seventy-one thousand, five hundred thirty".