20351643355116 has 30 divisors (see below), whose sum is σ = 53203215808820. Its totient is φ = 6783881118264.

The previous prime is 20351643354919. The next prime is 20351643355139. The reversal of 20351643355116 is 61155334615302.

20351643355116 is a `hidden beast` number, since 2 + 0 + 3 + 5 + 1 + 64 + 33 + 551 + 1 + 6 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 31406856706 + ... + 31406857353.

Almost surely, 2^{20351643355116} is an apocalyptic number.

It is an amenable number.

20351643355116 is an abundant number, since it is smaller than the sum of its proper divisors (32851572453704).

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

20351643355116 is a wasteful number, since it uses less digits than its factorization.

20351643355116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62813714075 (or 62813714064 counting only the distinct ones).

The product of its (nonzero) digits is 972000, while the sum is 45.

The spelling of 20351643355116 in words is "twenty trillion, three hundred fifty-one billion, six hundred forty-three million, three hundred fifty-five thousand, one hundred sixteen".