872251036808 has 12 divisors (see below), whose sum is σ = 1635475647015. Its totient is φ = 436124197608.

The previous prime is 872251036799. The next prime is 872251036873. The reversal of 872251036808 is 808630152278.

It is a happy number.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 436125518404 + 436125518404 = 660398^2 + 660398^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=660398.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 2476493 + ... + 2806691.

Almost surely, 2^872251036808 is an apocalyptic number.

It is an amenable number.

872251036808 is a deficient number, since it is larger than the sum of its proper divisors (763224610207).

872251036808 is an frugal number, since it uses more digits than its factorization.

872251036808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 660404 (or 330201 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 50.

Multiplying 872251036808 by its sum of digits (50), we get a square (43612551840400 = 6603980²).

The spelling of 872251036808 in words is "eight hundred seventy-two billion, two hundred fifty-one million, thirty-six thousand, eight hundred eight".