13120505040015 has 96 divisors (see below), whose sum is σ = 23622886490112. Its totient is φ = 6729525792000.

The previous prime is 13120505040001. The next prime is 13120505040059. The reversal of 13120505040015 is 51004050502131.

13120505040015 is a `hidden beast` number, since 1 + 3 + 1 + 205 + 0 + 50 + 400 + 1 + 5 = 666.

It is not a de Polignac number, because 13120505040015 - 2³⁸ = 12845627133071 is a prime.

It is a congruent number.

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, 265620970 + ... + 265670360.

It is an arithmetic number, because the mean of its divisors is an integer number (246071734272).

Almost surely, 2^{13120505040015} is an apocalyptic number.

13120505040015 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13120505040015 is a deficient number, since it is larger than the sum of its proper divisors (10502381450097).

13120505040015 is a wasteful number, since it uses less digits than its factorization.

13120505040015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50621 (or 50618 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

Adding to 13120505040015 its reverse (51004050502131), we get a palindrome (64124555542146).

The spelling of 13120505040015 in words is "thirteen trillion, one hundred twenty billion, five hundred five million, forty thousand, fifteen".