63425801684 has 18 divisors (see below), whose sum is σ = 129116810970. Its totient is φ = 27182486352.

The previous prime is 63425801623. The next prime is 63425801717. The reversal of 63425801684 is 48610852436.

It can be written as a sum of positive squares in only one way, i.e., 50975705284 + 12450096400 = 225778^2 + 111580^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 161800319 + ... + 161800710.

It is an arithmetic number, because the mean of its divisors is an integer number (7173156165).

Almost surely, 2^63425801684 is an apocalyptic number.

It is an amenable number.

63425801684 is an abundant number, since it is smaller than the sum of its proper divisors (65691009286).

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

63425801684 is a wasteful number, since it uses less digits than its factorization.

63425801684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323601047 (or 323601038 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 47.

The spelling of 63425801684 in words is "sixty-three billion, four hundred twenty-five million, eight hundred one thousand, six hundred eighty-four".