63317841816 has 16 divisors (see below), whose sum is σ = 158294604600. Its totient is φ = 21105947264.

The previous prime is 63317841773. The next prime is 63317841823. The reversal of 63317841816 is 61814871336.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1319121681 + ... + 1319121728.

Almost surely, 2^63317841816 is an apocalyptic number.

It is an amenable number.

63317841816 is an abundant number, since it is smaller than the sum of its proper divisors (94976762784).

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

63317841816 is a wasteful number, since it uses less digits than its factorization.

63317841816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2638243418 (or 2638243414 counting only the distinct ones).

The product of its digits is 580608, while the sum is 48.

The spelling of 63317841816 in words is "sixty-three billion, three hundred seventeen million, eight hundred forty-one thousand, eight hundred sixteen".