63499111816 has 16 divisors (see below), whose sum is σ = 136069525440. Its totient is φ = 27213905040.

The previous prime is 63499111813. The next prime is 63499111829. The reversal of 63499111816 is 61811199436.

63499111816 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 63499111816.

It is not an unprimeable number, because it can be changed into a prime (63499111811) 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, 566956300 + ... + 566956411.

It is an arithmetic number, because the mean of its divisors is an integer number (8504345340).

Almost surely, 2^63499111816 is an apocalyptic number.

It is an amenable number.

63499111816 is an abundant number, since it is smaller than the sum of its proper divisors (72570413624).

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

63499111816 is a wasteful number, since it uses less digits than its factorization.

63499111816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1133912724 (or 1133912720 counting only the distinct ones).

The product of its digits is 279936, while the sum is 49.

The spelling of 63499111816 in words is "sixty-three billion, four hundred ninety-nine million, one hundred eleven thousand, eight hundred sixteen".