13215315015 has 24 divisors (see below), whose sum is σ = 26178910368. Its totient is φ = 6041286720.

The previous prime is 13215314941. The next prime is 13215315023. The reversal of 13215315015 is 51051351231.

13215315015 is a `hidden beast` number, since 1 + 3 + 2 + 153 + 1 + 501 + 5 = 666.

13215315015 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13215315015 - 2⁷ = 13215314887 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13215315015.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20976376 + ... + 20977005.

It is an arithmetic number, because the mean of its divisors is an integer number (1090787932).

Almost surely, 2^13215315015 is an apocalyptic number.

13215315015 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13215315015 is a deficient number, since it is larger than the sum of its proper divisors (12963595353).

13215315015 is a wasteful number, since it uses less digits than its factorization.

13215315015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41953399 (or 41953396 counting only the distinct ones).

The product of its (nonzero) digits is 2250, while the sum is 27.

Adding to 13215315015 its reverse (51051351231), we get a palindrome (64266666246).

The spelling of 13215315015 in words is "thirteen billion, two hundred fifteen million, three hundred fifteen thousand, fifteen".