63857675836 has 24 divisors (see below), whose sum is σ = 112077592704. Its totient is φ = 31835631360.

The previous prime is 63857675779. The next prime is 63857675839.

63857675836 is nontrivially palindromic in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63857675839) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2137941 + ... + 2167603.

It is an arithmetic number, because the mean of its divisors is an integer number (4669899696).

Almost surely, 2^63857675836 is an apocalyptic number.

It is an amenable number.

63857675836 is a deficient number, since it is larger than the sum of its proper divisors (48219916868).

63857675836 is a wasteful number, since it uses less digits than its factorization.

63857675836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31221 (or 31219 counting only the distinct ones).

The product of its digits is 152409600, while the sum is 64.

The spelling of 63857675836 in words is "sixty-three billion, eight hundred fifty-seven million, six hundred seventy-five thousand, eight hundred thirty-six".