63991703542130 has 64 divisors (see below), whose sum is σ = 146654726480640. Its totient is φ = 19553963514624.

The previous prime is 63991703542127. The next prime is 63991703542153. The reversal of 63991703542130 is 3124530719936.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1212396944 + ... + 1212449723.

It is an arithmetic number, because the mean of its divisors is an integer number (2291480101260).

Almost surely, 2^{63991703542130} is an apocalyptic number.

63991703542130 is an abundant number, since it is smaller than the sum of its proper divisors (82663022938510).

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

63991703542130 is a wasteful number, since it uses less digits than its factorization.

63991703542130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2424846723.

The product of its (nonzero) digits is 3674160, while the sum is 53.

The spelling of 63991703542130 in words is "sixty-three trillion, nine hundred ninety-one billion, seven hundred three million, five hundred forty-two thousand, one hundred thirty".