253215424515 has 8 divisors (see below), whose sum is σ = 405144679248. Its totient is φ = 135048226400.

The previous prime is 253215424493. The next prime is 253215424547. The reversal of 253215424515 is 515424512352.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-253215424515 is a prime.

It is a super-4 number, since 4×253215424515⁴ (a number of 47 digits) contains 4444 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8440514136 + ... + 8440514165.

It is an arithmetic number, because the mean of its divisors is an integer number (50643084906).

Almost surely, 2^253215424515 is an apocalyptic number.

253215424515 is a deficient number, since it is larger than the sum of its proper divisors (151929254733).

253215424515 is a wasteful number, since it uses less digits than its factorization.

253215424515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16881028309.

The product of its digits is 240000, while the sum is 39.

Adding to 253215424515 its reverse (515424512352), we get a palindrome (768639936867).

The spelling of 253215424515 in words is "two hundred fifty-three billion, two hundred fifteen million, four hundred twenty-four thousand, five hundred fifteen".