13123042423515 has 96 divisors (see below), whose sum is σ = 23416654060800. Its totient is φ = 6794800992000.

The previous prime is 13123042423489. The next prime is 13123042423529. The reversal of 13123042423515 is 51532424032131.

13123042423515 is a `hidden beast` number, since 1 + 31 + 2 + 30 + 4 + 242 + 351 + 5 = 666.

It is not a de Polignac number, because 13123042423515 - 2⁶ = 13123042423451 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13123042423515.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 735134340 + ... + 735152190.

It is an arithmetic number, because the mean of its divisors is an integer number (243923479800).

Almost surely, 2^{13123042423515} is an apocalyptic number.

13123042423515 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13123042423515 is a deficient number, since it is larger than the sum of its proper divisors (10293611637285).

13123042423515 is a wasteful number, since it uses less digits than its factorization.

13123042423515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20185 (or 20182 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

Adding to 13123042423515 its reverse (51532424032131), we get a palindrome (64655466455646).

The spelling of 13123042423515 in words is "thirteen trillion, one hundred twenty-three billion, forty-two million, four hundred twenty-three thousand, five hundred fifteen".