872104870644 has 48 divisors (see below), whose sum is σ = 2346948912000. Its totient is φ = 246886828416.

The previous prime is 872104870621. The next prime is 872104870649. The reversal of 872104870644 is 446078401278.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (872104870649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47615619 + ... + 47633930.

It is an arithmetic number, because the mean of its divisors is an integer number (48894769000).

Almost surely, 2^872104870644 is an apocalyptic number.

872104870644 is a gapful number since it is divisible by the number (84) formed by its first and last digit.

It is an amenable number.

872104870644 is an abundant number, since it is smaller than the sum of its proper divisors (1474844041356).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

872104870644 is a wasteful number, since it uses less digits than its factorization.

872104870644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95249672 (or 95249670 counting only the distinct ones).

The product of its (nonzero) digits is 2408448, while the sum is 51.

The spelling of 872104870644 in words is "eight hundred seventy-two billion, one hundred four million, eight hundred seventy thousand, six hundred forty-four".