872865792866 has 8 divisors (see below), whose sum is σ = 1309402730460. Its totient is φ = 436398216048.

The previous prime is 872865792793. The next prime is 872865792959. The reversal of 872865792866 is 668297568278.

872865792866 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 860395380625 + 12470412241 = 927575^2 + 111671^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 872865792793 and 872865792802.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17308721 + ... + 17359076.

Almost surely, 2^872865792866 is an apocalyptic number.

872865792866 is a deficient number, since it is larger than the sum of its proper divisors (436536937594).

872865792866 is a wasteful number, since it uses less digits than its factorization.

872865792866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34680388.

The product of its digits is 975421440, while the sum is 74.

The spelling of 872865792866 in words is "eight hundred seventy-two billion, eight hundred sixty-five million, seven hundred ninety-two thousand, eight hundred sixty-six".