13123052551515 has 16 divisors (see below), whose sum is σ = 21086999470368. Its totient is φ = 6968922898176.

The previous prime is 13123052551513. The next prime is 13123052551517. The reversal of 13123052551515 is 51515525032131.

It is an interprime number because it is at equal distance from previous prime (13123052551513) and next prime (13123052551517).

It is not a de Polignac number, because 13123052551515 - 2¹ = 13123052551513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13123052551513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1877400304 + ... + 1877407293.

It is an arithmetic number, because the mean of its divisors is an integer number (1317937466898).

Almost surely, 2^{13123052551515} is an apocalyptic number.

13123052551515 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13123052551515 is a deficient number, since it is larger than the sum of its proper divisors (7963946918853).

13123052551515 is a wasteful number, since it uses less digits than its factorization.

13123052551515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3754807838.

The product of its (nonzero) digits is 112500, while the sum is 39.

Adding to 13123052551515 its reverse (51515525032131), we get a palindrome (64638577583646).

The spelling of 13123052551515 in words is "thirteen trillion, one hundred twenty-three billion, fifty-two million, five hundred fifty-one thousand, five hundred fifteen".