21470657004360 has 80 divisors (see below), whose sum is σ = 72165263831100. Its totient is φ = 5725508533632.

The previous prime is 21470657004331. The next prime is 21470657004383. The reversal of 21470657004360 is 6340075607412.

21470657004360 is a `hidden beast` number, since 2 + 1 + 4 + 70 + 6 + 570 + 0 + 4 + 3 + 6 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 21289605052356 + 181051952004 = 4614066^2 + 425502^2 .

It is a super-2 number, since 2×21470657004360² (a number of 27 digits) contains 22 as substring.

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 19 ways as a sum of consecutive naturals, for example, 3313369755 + ... + 3313376234.

Almost surely, 2^{21470657004360} is an apocalyptic number.

21470657004360 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21470657004360 is an abundant number, since it is smaller than the sum of its proper divisors (50694606826740).

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

21470657004360 is a wasteful number, since it uses less digits than its factorization.

21470657004360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6626746012 (or 6626745999 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 45.

The spelling of 21470657004360 in words is "twenty-one trillion, four hundred seventy billion, six hundred fifty-seven million, four thousand, three hundred sixty".