2315515321553 has 8 divisors (see below), whose sum is σ = 2653285558080. Its totient is φ = 1979490668400.

The previous prime is 2315515321507. The next prime is 2315515321619. The reversal of 2315515321553 is 3551235155132.

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

It is not a de Polignac number, because 2315515321553 - 2⁴⁰ = 1216003693777 is a prime.

It is a super-2 number, since 2×2315515321553² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2315515321553.

It is not an unprimeable number, because it can be changed into a prime (2315515320553) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 436392998 + ... + 436398303.

It is an arithmetic number, because the mean of its divisors is an integer number (331660694760).

Almost surely, 2^{2315515321553} is an apocalyptic number.

It is an amenable number.

2315515321553 is a deficient number, since it is larger than the sum of its proper divisors (337770236527).

2315515321553 is an equidigital number, since it uses as much as digits as its factorization.

2315515321553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 872791687.

The product of its digits is 337500, while the sum is 41.

The spelling of 2315515321553 in words is "two trillion, three hundred fifteen billion, five hundred fifteen million, three hundred twenty-one thousand, five hundred fifty-three".