863928689385 has 32 divisors (see below), whose sum is σ = 1384159166208. Its totient is φ = 460137922560.

The previous prime is 863928689363. The next prime is 863928689401. The reversal of 863928689385 is 583986829368.

It is not a de Polignac number, because 863928689385 - 2¹⁰ = 863928688361 is a prime.

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, 43886745 + ... + 43906425.

It is an arithmetic number, because the mean of its divisors is an integer number (43254973944).

Almost surely, 2^863928689385 is an apocalyptic number.

It is an amenable number.

863928689385 is a deficient number, since it is larger than the sum of its proper divisors (520230476823).

863928689385 is a wasteful number, since it uses less digits than its factorization.

863928689385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23505.

The product of its digits is 1074954240, while the sum is 75.

The spelling of 863928689385 in words is "eight hundred sixty-three billion, nine hundred twenty-eight million, six hundred eighty-nine thousand, three hundred eighty-five".