872102465809 has 8 divisors (see below), whose sum is σ = 924179233320. Its totient is φ = 821492649600.

The previous prime is 872102465807. The next prime is 872102465821. The reversal of 872102465809 is 908564201278.

It can be written as a sum of positive squares in 4 ways, for example, as 9609488784 + 862492977025 = 98028^2 + 928705^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 872102465809 - 2¹ = 872102465807 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (872102465807) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 366736602 + ... + 366738979.

It is an arithmetic number, because the mean of its divisors is an integer number (115522404165).

Almost surely, 2^872102465809 is an apocalyptic number.

It is an amenable number.

872102465809 is a deficient number, since it is larger than the sum of its proper divisors (52076767511).

872102465809 is a wasteful number, since it uses less digits than its factorization.

872102465809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 733475651.

The product of its (nonzero) digits is 1935360, while the sum is 52.

The spelling of 872102465809 in words is "eight hundred seventy-two billion, one hundred two million, four hundred sixty-five thousand, eight hundred nine".