13143231252515 has 96 divisors (see below), whose sum is σ = 20244458195136. Its totient is φ = 8114569666560.

The previous prime is 13143231252511. The next prime is 13143231252517. The reversal of 13143231252515 is 51525213234131.

It is not a de Polignac number, because 13143231252515 - 2² = 13143231252511 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13143231252511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 871386164 + ... + 871401246.

It is an arithmetic number, because the mean of its divisors is an integer number (210879772866).

Almost surely, 2^{13143231252515} is an apocalyptic number.

13143231252515 is a deficient number, since it is larger than the sum of its proper divisors (7101226942621).

13143231252515 is a wasteful number, since it uses less digits than its factorization.

13143231252515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21829 (or 21822 counting only the distinct ones).

The product of its digits is 108000, while the sum is 38.

Adding to 13143231252515 its reverse (51525213234131), we get a palindrome (64668444486646).

The spelling of 13143231252515 in words is "thirteen trillion, one hundred forty-three billion, two hundred thirty-one million, two hundred fifty-two thousand, five hundred fifteen".