63988757144 has 16 divisors (see below), whose sum is σ = 129208067520. Its totient is φ = 29533272480.

The previous prime is 63988757083. The next prime is 63988757149. The reversal of 63988757144 is 44175788936.

63988757144 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×63988757144² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63988757149) 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, 307638152 + ... + 307638359.

It is an arithmetic number, because the mean of its divisors is an integer number (8075504220).

Almost surely, 2^63988757144 is an apocalyptic number.

It is an amenable number.

63988757144 is an abundant number, since it is smaller than the sum of its proper divisors (65219310376).

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

63988757144 is a wasteful number, since it uses less digits than its factorization.

63988757144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 615276530 (or 615276526 counting only the distinct ones).

The product of its digits is 40642560, while the sum is 62.

The spelling of 63988757144 in words is "sixty-three billion, nine hundred eighty-eight million, seven hundred fifty-seven thousand, one hundred forty-four".