13117015613 has 6 divisors (see below), whose sum is σ = 14203632474. Its totient is φ = 12108014256.

The previous prime is 13117015609. The next prime is 13117015657. The reversal of 13117015613 is 31651071131.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 401521444 + 12715494169 = 20038^2 + 112763^2 .

It is not a de Polignac number, because 13117015613 - 2² = 13117015609 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13117015673) 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 5 ways as a sum of consecutive naturals, for example, 38807570 + ... + 38807907.

It is an arithmetic number, because the mean of its divisors is an integer number (2367272079).

Almost surely, 2^13117015613 is an apocalyptic number.

13117015613 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

13117015613 is a deficient number, since it is larger than the sum of its proper divisors (1086616861).

13117015613 is an equidigital number, since it uses as much as digits as its factorization.

13117015613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77615503 (or 77615490 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 29.

Adding to 13117015613 its reverse (31651071131), we get a palindrome (44768086744).

The spelling of 13117015613 in words is "thirteen billion, one hundred seventeen million, fifteen thousand, six hundred thirteen".