20021047413264 has 60 divisors (see below), whose sum is σ = 56034146800476. Its totient is φ = 6673322643456.

The previous prime is 20021047413251. The next prime is 20021047413287. The reversal of 20021047413264 is 46231474012002.

20021047413264 is a `hidden beast` number, since 2 + 0 + 0 + 210 + 4 + 7 + 413 + 26 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 10409063310864 + 9611984102400 = 3226308^2 + 3100320^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 1061517 + ... + 6416300.

Almost surely, 2^{20021047413264} is an apocalyptic number.

20021047413264 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20021047413264 is an abundant number, since it is smaller than the sum of its proper divisors (36013099387212).

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

20021047413264 is a wasteful number, since it uses less digits than its factorization.

20021047413264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7496424 (or 7496415 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 36.

The spelling of 20021047413264 in words is "twenty trillion, twenty-one billion, forty-seven million, four hundred thirteen thousand, two hundred sixty-four".