2040645599 has 4 divisors (see below), whose sum is σ = 2071103064. Its totient is φ = 2010188136.

The previous prime is 2040645533. The next prime is 2040645601. The reversal of 2040645599 is 9955460402.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2040645599 - 2²⁴ = 2023868383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2040645799) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15228632 + ... + 15228765.

It is an arithmetic number, because the mean of its divisors is an integer number (517775766).

Almost surely, 2^2040645599 is an apocalyptic number.

2040645599 is a deficient number, since it is larger than the sum of its proper divisors (30457465).

2040645599 is an equidigital number, since it uses as much as digits as its factorization.

2040645599 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30457464.

The product of its (nonzero) digits is 388800, while the sum is 44.

The square root of 2040645599 is about 45173.5054982453. The cubic root of 2040645599 is about 1268.3989162972.

The spelling of 2040645599 in words is "two billion, forty million, six hundred forty-five thousand, five hundred ninety-nine".