869745978219 has 32 divisors (see below), whose sum is σ = 1195194873600. Its totient is φ = 562394448000.

The previous prime is 869745978203. The next prime is 869745978253. The reversal of 869745978219 is 912879547968.

869745978219 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 869745978219 - 2⁴ = 869745978203 is a prime.

It is a super-2 number, since 2×869745978219² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (869745978419) 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, 3556132 + ... + 3792830.

It is an arithmetic number, because the mean of its divisors is an integer number (37349839800).

Almost surely, 2^869745978219 is an apocalyptic number.

869745978219 is a deficient number, since it is larger than the sum of its proper divisors (325448895381).

869745978219 is a wasteful number, since it uses less digits than its factorization.

869745978219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237051.

The product of its digits is 548674560, while the sum is 75.

The spelling of 869745978219 in words is "eight hundred sixty-nine billion, seven hundred forty-five million, nine hundred seventy-eight thousand, two hundred nineteen".