63863373504 has 112 divisors (see below), whose sum is σ = 194227630848. Its totient is φ = 18141139968.

The previous prime is 63863373479. The next prime is 63863373521. The reversal of 63863373504 is 40537336836.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (112).

It is a super-2 number, since 2×63863373504² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 95179 + ... + 369845.

Almost surely, 2^63863373504 is an apocalyptic number.

63863373504 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63863373504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97113815424).

63863373504 is an abundant number, since it is smaller than the sum of its proper divisors (130364257344).

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

63863373504 is a wasteful number, since it uses less digits than its factorization.

63863373504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274862 (or 274852 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 48.

The spelling of 63863373504 in words is "sixty-three billion, eight hundred sixty-three million, three hundred seventy-three thousand, five hundred four".