63264401388 has 72 divisors (see below), whose sum is σ = 160942266576. Its totient is φ = 20953497600.

The previous prime is 63264401383. The next prime is 63264401393. The reversal of 63264401388 is 88310446236.

63264401388 is a `hidden beast` number, since 6 + 3 + 264 + 4 + 0 + 1 + 388 = 666.

It is an interprime number because it is at equal distance from previous prime (63264401383) and next prime (63264401393).

It is not an unprimeable number, because it can be changed into a prime (63264401383) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4110828 + ... + 4126188.

It is an arithmetic number, because the mean of its divisors is an integer number (2235309258).

Almost surely, 2^63264401388 is an apocalyptic number.

It is an amenable number.

63264401388 is an abundant number, since it is smaller than the sum of its proper divisors (97677865188).

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

63264401388 is a wasteful number, since it uses less digits than its factorization.

63264401388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16095 (or 16090 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 45.

The spelling of 63264401388 in words is "sixty-three billion, two hundred sixty-four million, four hundred one thousand, three hundred eighty-eight".