20563660936116 has 60 divisors (see below), whose sum is σ = 53758024592580. Its totient is φ = 6854483139840.

The previous prime is 20563660936087. The next prime is 20563660936121. The reversal of 20563660936116 is 61163906636502.

It is a happy number.

20563660936116 is a `hidden beast` number, since 2 + 0 + 563 + 6 + 6 + 0 + 9 + 3 + 61 + 16 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 9603615060900 + 10960045875216 = 3098970^2 + 3310596^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

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, 38243980 + ... + 38777948.

It is an arithmetic number, because the mean of its divisors is an integer number (895967076543).

Almost surely, 2^{20563660936116} is an apocalyptic number.

It is an amenable number.

20563660936116 is an abundant number, since it is smaller than the sum of its proper divisors (33194363656464).

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

20563660936116 is a wasteful number, since it uses less digits than its factorization.

20563660936116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 652846 (or 652835 counting only the distinct ones).

The product of its (nonzero) digits is 6298560, while the sum is 54.

The spelling of 20563660936116 in words is "twenty trillion, five hundred sixty-three billion, six hundred sixty million, nine hundred thirty-six thousand, one hundred sixteen".