63858452591164 has 96 divisors (see below), whose sum is σ = 140253031134720. Its totient is φ = 24715191916800.

The previous prime is 63858452591137. The next prime is 63858452591173. The reversal of 63858452591164 is 46119525485836.

It is a self number, because there is not a number n which added to its sum of digits gives 63858452591164.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27108942 + ... + 29370250.

It is an arithmetic number, because the mean of its divisors is an integer number (1460969074320).

Almost surely, 2^{63858452591164} 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 63858452591164, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70126515567360).

63858452591164 is an abundant number, since it is smaller than the sum of its proper divisors (76394578543556).

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

63858452591164 is a wasteful number, since it uses less digits than its factorization.

63858452591164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2261939 (or 2261937 counting only the distinct ones).

The product of its digits is 248832000, while the sum is 67.

The spelling of 63858452591164 in words is "sixty-three trillion, eight hundred fifty-eight billion, four hundred fifty-two million, five hundred ninety-one thousand, one hundred sixty-four".