63875139794 has 4 divisors (see below), whose sum is σ = 95812709694. Its totient is φ = 31937569896.

The previous prime is 63875139739. The next prime is 63875139817. The reversal of 63875139794 is 49793157836.

63875139794 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 46887406225 + 16987733569 = 216535^2 + 130337^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15968784947 + ... + 15968784950.

Almost surely, 2^63875139794 is an apocalyptic number.

63875139794 is a deficient number, since it is larger than the sum of its proper divisors (31937569900).

63875139794 is a wasteful number, since it uses less digits than its factorization.

63875139794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31937569899.

The product of its digits is 34292160, while the sum is 62.

The spelling of 63875139794 in words is "sixty-three billion, eight hundred seventy-five million, one hundred thirty-nine thousand, seven hundred ninety-four".