63999163152 has 320 divisors, whose sum is σ = 205502918400. Its totient is φ = 18951045120.

The previous prime is 63999163141. The next prime is 63999163177. The reversal of 63999163152 is 25136199936.

It is a Harshad number since it is a multiple of its sum of digits (54).

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 63 ways as a sum of consecutive naturals, for example, 47022952 + ... + 47024312.

It is an arithmetic number, because the mean of its divisors is an integer number (642196620).

Almost surely, 2^63999163152 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63999163152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102751459200).

63999163152 is an abundant number, since it is smaller than the sum of its proper divisors (141503755248).

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

63999163152 is a wasteful number, since it uses less digits than its factorization.

63999163152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1751 (or 1739 counting only the distinct ones).

The product of its digits is 2361960, while the sum is 54.

The spelling of 63999163152 in words is "sixty-three billion, nine hundred ninety-nine million, one hundred sixty-three thousand, one hundred fifty-two".