861873528093 has 32 divisors (see below), whose sum is σ = 1293621394176. Its totient is φ = 507511200768.

The previous prime is 861873528077. The next prime is 861873528097. The reversal of 861873528093 is 390825378168.

It is not a de Polignac number, because 861873528093 - 2⁴ = 861873528077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (861873528097) 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, 6869530 + ... + 6993867.

It is an arithmetic number, because the mean of its divisors is an integer number (40425668568).

Almost surely, 2^861873528093 is an apocalyptic number.

It is an amenable number.

861873528093 is a deficient number, since it is larger than the sum of its proper divisors (431747866083).

861873528093 is a wasteful number, since it uses less digits than its factorization.

861873528093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13863493.

The product of its (nonzero) digits is 17418240, while the sum is 60.

The spelling of 861873528093 in words is "eight hundred sixty-one billion, eight hundred seventy-three million, five hundred twenty-eight thousand, ninety-three".