63697115816 has 16 divisors (see below), whose sum is σ = 119434811040. Its totient is φ = 31847832880.

The previous prime is 63697115789. The next prime is 63697115819. The reversal of 63697115816 is 61851179636.

63697115816 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (63697115819) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 544925 + ... + 651411.

It is an arithmetic number, because the mean of its divisors is an integer number (7464675690).

Almost surely, 2^63697115816 is an apocalyptic number.

It is an amenable number.

63697115816 is a deficient number, since it is larger than the sum of its proper divisors (55737695224).

63697115816 is a wasteful number, since it uses less digits than its factorization.

63697115816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181264 (or 181260 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 53.

The spelling of 63697115816 in words is "sixty-three billion, six hundred ninety-seven million, one hundred fifteen thousand, eight hundred sixteen".