63684795380 has 24 divisors (see below), whose sum is σ = 134921597832. Its totient is φ = 25248484352.

The previous prime is 63684795373. The next prime is 63684795443. The reversal of 63684795380 is 8359748636.

It can be written as a sum of positive squares in 4 ways, for example, as 30514576 + 63654280804 = 5524^2 + 252298^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14087297 + ... + 14091816.

It is an arithmetic number, because the mean of its divisors is an integer number (5621733243).

Almost surely, 2^63684795380 is an apocalyptic number.

It is an amenable number.

63684795380 is an abundant number, since it is smaller than the sum of its proper divisors (71236802452).

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

63684795380 is a wasteful number, since it uses less digits than its factorization.

63684795380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28179235 (or 28179233 counting only the distinct ones).

The product of its (nonzero) digits is 26127360, while the sum is 59.

The spelling of 63684795380 in words is "sixty-three billion, six hundred eighty-four million, seven hundred ninety-five thousand, three hundred eighty".