63404300646 has 24 divisors (see below), whose sum is σ = 137965590360. Its totient is φ = 21044058336.

The previous prime is 63404300593. The next prime is 63404300647. The reversal of 63404300646 is 64600340436.

63404300646 is a `hidden beast` number, since 6 + 3 + 4 + 0 + 4 + 3 + 0 + 0 + 646 = 666.

63404300646 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 63404300646.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63404300647) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7554736 + ... + 7563123.

It is an arithmetic number, because the mean of its divisors is an integer number (5748566265).

Almost surely, 2^63404300646 is an apocalyptic number.

63404300646 is an abundant number, since it is smaller than the sum of its proper divisors (74561289714).

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

63404300646 is a wasteful number, since it uses less digits than its factorization.

63404300646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15118100 (or 15118097 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 36.

The spelling of 63404300646 in words is "sixty-three billion, four hundred four million, three hundred thousand, six hundred forty-six".