63613888613 has 32 divisors (see below), whose sum is σ = 73480535040. Its totient is φ = 54540864000.

The previous prime is 63613888579. The next prime is 63613888621. The reversal of 63613888613 is 31688831636.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 63613888613 - 2²⁴ = 63597111397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63613888213) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2253281 + ... + 2281337.

It is an arithmetic number, because the mean of its divisors is an integer number (2296266720).

Almost surely, 2^63613888613 is an apocalyptic number.

It is an amenable number.

63613888613 is a deficient number, since it is larger than the sum of its proper divisors (9866646427).

63613888613 is a wasteful number, since it uses less digits than its factorization.

63613888613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28269.

The product of its digits is 2985984, while the sum is 53.

The spelling of 63613888613 in words is "sixty-three billion, six hundred thirteen million, eight hundred eighty-eight thousand, six hundred thirteen".