253431645699 has 16 divisors (see below), whose sum is σ = 341273646720. Its totient is φ = 167278547520.

The previous prime is 253431645653. The next prime is 253431645769. The reversal of 253431645699 is 996546134352.

It is a de Polignac number, because none of the positive numbers 2^k-253431645699 is a prime.

It is not an unprimeable number, because it can be changed into a prime (253431649699) 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, 657717 + ... + 969254.

It is an arithmetic number, because the mean of its divisors is an integer number (21329602920).

Almost surely, 2^253431645699 is an apocalyptic number.

253431645699 is a deficient number, since it is larger than the sum of its proper divisors (87842001021).

253431645699 is a wasteful number, since it uses less digits than its factorization.

253431645699 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1627490.

The product of its digits is 20995200, while the sum is 57.

The spelling of 253431645699 in words is "two hundred fifty-three billion, four hundred thirty-one million, six hundred forty-five thousand, six hundred ninety-nine".