63894501264 has 80 divisors (see below), whose sum is σ = 185874960384. Its totient is φ = 18737385600.

The previous prime is 63894501199. The next prime is 63894501271. The reversal of 63894501264 is 46210549836.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1935444 + ... + 1968179.

Almost surely, 2^63894501264 is an apocalyptic number.

It is an amenable number.

63894501264 is an abundant number, since it is smaller than the sum of its proper divisors (121980459120).

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

63894501264 is a wasteful number, since it uses less digits than its factorization.

63894501264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3903676 (or 3903670 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 48.

The spelling of 63894501264 in words is "sixty-three billion, eight hundred ninety-four million, five hundred one thousand, two hundred sixty-four".