13820415613 has 2 divisors, whose sum is σ = 13820415614. Its totient is φ = 13820415612.

The previous prime is 13820415601. The next prime is 13820415617. The reversal of 13820415613 is 31651402831.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12842102329 + 978313284 = 113323^2 + 31278^2 .

It is an emirp because it is prime and its reverse (31651402831) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13820415613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13820415617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6910207806 + 6910207807.

It is an arithmetic number, because the mean of its divisors is an integer number (6910207807).

Almost surely, 2^13820415613 is an apocalyptic number.

It is an amenable number.

13820415613 is a deficient number, since it is larger than the sum of its proper divisors (1).

13820415613 is an equidigital number, since it uses as much as digits as its factorization.

13820415613 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 34.

The spelling of 13820415613 in words is "thirteen billion, eight hundred twenty million, four hundred fifteen thousand, six hundred thirteen".