20430544644063 has 20 divisors (see below), whose sum is σ = 30521778609168. Its totient is φ = 13619436564960.

The previous prime is 20430544644047. The next prime is 20430544644157. The reversal of 20430544644063 is 36044644503402.

20430544644063 is a `hidden beast` number, since 2 + 0 + 4 + 3 + 0 + 544 + 6 + 4 + 40 + 63 = 666.

It is not a de Polignac number, because 20430544644063 - 2⁴ = 20430544644047 is a prime.

It is a super-2 number, since 2×20430544644063² (a number of 27 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20430544644023) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 7379883 + ... + 9763388.

Almost surely, 2^{20430544644063} is an apocalyptic number.

20430544644063 is a deficient number, since it is larger than the sum of its proper divisors (10091233965105).

20430544644063 is a wasteful number, since it uses less digits than its factorization.

20430544644063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17157996 (or 17157987 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 45.

The spelling of 20430544644063 in words is "twenty trillion, four hundred thirty billion, five hundred forty-four million, six hundred forty-four thousand, sixty-three".