13808171513 has 2 divisors, whose sum is σ = 13808171514. Its totient is φ = 13808171512.

The previous prime is 13808171479. The next prime is 13808171539. The reversal of 13808171513 is 31517180831.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13757647849 + 50523664 = 117293^2 + 7108^2 .

It is a cyclic number.

It is not a de Polignac number, because 13808171513 - 2¹⁶ = 13808105977 is a prime.

It is not a weakly prime, because it can be changed into another prime (13808170513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6904085756 + 6904085757.

It is an arithmetic number, because the mean of its divisors is an integer number (6904085757).

Almost surely, 2^13808171513 is an apocalyptic number.

It is an amenable number.

13808171513 is a deficient number, since it is larger than the sum of its proper divisors (1).

13808171513 is an equidigital number, since it uses as much as digits as its factorization.

13808171513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 38.

The spelling of 13808171513 in words is "thirteen billion, eight hundred eight million, one hundred seventy-one thousand, five hundred thirteen".