13020313515 has 64 divisors (see below), whose sum is σ = 24100830720. Its totient is φ = 5932247040.

The previous prime is 13020313513. The next prime is 13020313567. The reversal of 13020313515 is 51531302031.

It is not a de Polignac number, because 13020313515 - 2¹ = 13020313513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13020313513) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1985472 + ... + 1992018.

It is an arithmetic number, because the mean of its divisors is an integer number (376575480).

Almost surely, 2^13020313515 is an apocalyptic number.

13020313515 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13020313515 is a deficient number, since it is larger than the sum of its proper divisors (11080517205).

13020313515 is a wasteful number, since it uses less digits than its factorization.

13020313515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7292.

The product of its (nonzero) digits is 1350, while the sum is 24.

Adding to 13020313515 its reverse (51531302031), we get a palindrome (64551615546).

The spelling of 13020313515 in words is "thirteen billion, twenty million, three hundred thirteen thousand, five hundred fifteen".