253215106613 has 12 divisors (see below), whose sum is σ = 300114018540. Its totient is φ = 212946394752.

The previous prime is 253215106601. The next prime is 253215106619. The reversal of 253215106613 is 316601512352.

It can be written as a sum of positive squares in 2 ways, for example, as 221500127044 + 31714979569 = 470638^2 + 178087^2 .

It is not a de Polignac number, because 253215106613 - 2³⁰ = 252141364789 is a prime.

It is a super-4 number, since 4×253215106613⁴ (a number of 47 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253215106619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48748868 + ... + 48754061.

It is an arithmetic number, because the mean of its divisors is an integer number (25009501545).

Almost surely, 2^253215106613 is an apocalyptic number.

It is an amenable number.

253215106613 is a deficient number, since it is larger than the sum of its proper divisors (46898911927).

253215106613 is an equidigital number, since it uses as much as digits as its factorization.

253215106613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97502996 (or 97502989 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 35.

Adding to 253215106613 its reverse (316601512352), we get a palindrome (569816618965).

The spelling of 253215106613 in words is "two hundred fifty-three billion, two hundred fifteen million, one hundred six thousand, six hundred thirteen".