2165312043204 has 48 divisors (see below), whose sum is σ = 5172853771008. Its totient is φ = 704581482528.

The previous prime is 2165312043187. The next prime is 2165312043221. The reversal of 2165312043204 is 4023402135612.

It is an interprime number because it is at equal distance from previous prime (2165312043187) and next prime (2165312043221).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 299562 + ... + 2102465.

It is an arithmetic number, because the mean of its divisors is an integer number (107767786896).

Almost surely, 2^{2165312043204} is an apocalyptic number.

It is an amenable number.

2165312043204 is an abundant number, since it is smaller than the sum of its proper divisors (3007541727804).

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

2165312043204 is a wasteful number, since it uses less digits than its factorization.

2165312043204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2403824 (or 2403822 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 33.

Adding to 2165312043204 its reverse (4023402135612), we get a palindrome (6188714178816).

The spelling of 2165312043204 in words is "two trillion, one hundred sixty-five billion, three hundred twelve million, forty-three thousand, two hundred four".