63871561798 has 32 divisors (see below), whose sum is σ = 115476710400. Its totient is φ = 26136696960.

The previous prime is 63871561777. The next prime is 63871561829. The reversal of 63871561798 is 89716517836.

63871561798 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3703998 + ... + 3721201.

It is an arithmetic number, because the mean of its divisors is an integer number (3608647200).

Almost surely, 2^63871561798 is an apocalyptic number.

63871561798 is a deficient number, since it is larger than the sum of its proper divisors (51605148602).

63871561798 is a wasteful number, since it uses less digits than its factorization.

63871561798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7425252.

The product of its digits is 15240960, while the sum is 61.

The spelling of 63871561798 in words is "sixty-three billion, eight hundred seventy-one million, five hundred sixty-one thousand, seven hundred ninety-eight".