63866980416 has 56 divisors (see below), whose sum is σ = 169005975424. Its totient is φ = 21285895680.

The previous prime is 63866980283. The next prime is 63866980423. The reversal of 63866980416 is 61408966836.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1572201 + ... + 1612311.

Almost surely, 2^63866980416 is an apocalyptic number.

It is an amenable number.

63866980416 is an abundant number, since it is smaller than the sum of its proper divisors (105138995008).

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

63866980416 is a wasteful number, since it uses less digits than its factorization.

63866980416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48419 (or 48409 counting only the distinct ones).

The product of its (nonzero) digits is 8957952, while the sum is 57.

The spelling of 63866980416 in words is "sixty-three billion, eight hundred sixty-six million, nine hundred eighty thousand, four hundred sixteen".