863875846561 has 32 divisors (see below), whose sum is σ = 1149439880960. Its totient is φ = 630031239936.

The previous prime is 863875846553. The next prime is 863875846571. The reversal of 863875846561 is 165648578368.

It is not a de Polignac number, because 863875846561 - 2³ = 863875846553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (863875846501) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6687906 + ... + 6815851.

It is an arithmetic number, because the mean of its divisors is an integer number (35919996280).

Almost surely, 2^863875846561 is an apocalyptic number.

It is an amenable number.

863875846561 is a deficient number, since it is larger than the sum of its proper divisors (285564034399).

863875846561 is a wasteful number, since it uses less digits than its factorization.

863875846561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13503833.

The product of its digits is 232243200, while the sum is 67.

The spelling of 863875846561 in words is "eight hundred sixty-three billion, eight hundred seventy-five million, eight hundred forty-six thousand, five hundred sixty-one".