63642455676352 has 84 divisors (see below), whose sum is σ = 146915671902384. Its totient is φ = 27274165309440.

The previous prime is 63642455676337. The next prime is 63642455676391. The reversal of 63642455676352 is 25367655424636.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (64).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 74560528 + ... + 75409264.

It is an arithmetic number, because the mean of its divisors is an integer number (1748996094076).

Almost surely, 2^{63642455676352} is an apocalyptic number.

It is an amenable number.

63642455676352 is an abundant number, since it is smaller than the sum of its proper divisors (83273216226032).

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

63642455676352 is a wasteful number, since it uses less digits than its factorization.

63642455676352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 872674 (or 872657 counting only the distinct ones).

The product of its digits is 653184000, while the sum is 64.

The spelling of 63642455676352 in words is "sixty-three trillion, six hundred forty-two billion, four hundred fifty-five million, six hundred seventy-six thousand, three hundred fifty-two".