253564434415 has 24 divisors (see below), whose sum is σ = 310224364128. Its totient is φ = 198953726400.

The previous prime is 253564434407. The next prime is 253564434433. The reversal of 253564434415 is 514434465352.

It is not a de Polignac number, because 253564434415 - 2³ = 253564434407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4685049 + ... + 4738861.

It is an arithmetic number, because the mean of its divisors is an integer number (12926015172).

Almost surely, 2^253564434415 is an apocalyptic number.

253564434415 is a deficient number, since it is larger than the sum of its proper divisors (56659929713).

253564434415 is an equidigital number, since it uses as much as digits as its factorization.

253564434415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54127 (or 54048 counting only the distinct ones).

The product of its digits is 3456000, while the sum is 46.

Adding to 253564434415 its reverse (514434465352), we get a palindrome (767998899767).

The spelling of 253564434415 in words is "two hundred fifty-three billion, five hundred sixty-four million, four hundred thirty-four thousand, four hundred fifteen".