13517775197 has 2 divisors, whose sum is σ = 13517775198. Its totient is φ = 13517775196.

The previous prime is 13517775181. The next prime is 13517775247. The reversal of 13517775197 is 79157771531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8778003481 + 4739771716 = 93691^2 + 68846^2 .

It is a cyclic number.

It is not a de Polignac number, because 13517775197 - 2⁴ = 13517775181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13517775157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6758887598 + 6758887599.

It is an arithmetic number, because the mean of its divisors is an integer number (6758887599).

Almost surely, 2^13517775197 is an apocalyptic number.

It is an amenable number.

13517775197 is a deficient number, since it is larger than the sum of its proper divisors (1).

13517775197 is an equidigital number, since it uses as much as digits as its factorization.

13517775197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1620675, while the sum is 53.

The spelling of 13517775197 in words is "thirteen billion, five hundred seventeen million, seven hundred seventy-five thousand, one hundred ninety-seven".