63718557360 has 40 divisors (see below), whose sum is σ = 197527528560. Its totient is φ = 16991615232.

The previous prime is 63718557341. The next prime is 63718557373. The reversal of 63718557360 is 6375581736.

63718557360 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×63718557360² (a number of 22 digits) contains 22 as substring.

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, 132746755 + ... + 132747234.

It is an arithmetic number, because the mean of its divisors is an integer number (4938188214).

Almost surely, 2^63718557360 is an apocalyptic number.

63718557360 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

63718557360 is an abundant number, since it is smaller than the sum of its proper divisors (133808971200).

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

63718557360 is a wasteful number, since it uses less digits than its factorization.

63718557360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265494005 (or 265493999 counting only the distinct ones).

The product of its (nonzero) digits is 3175200, while the sum is 51.

The spelling of 63718557360 in words is "sixty-three billion, seven hundred eighteen million, five hundred fifty-seven thousand, three hundred sixty".