13508727504197 has 2 divisors, whose sum is σ = 13508727504198. Its totient is φ = 13508727504196.

The previous prime is 13508727504127. The next prime is 13508727504313. The reversal of 13508727504197 is 79140572780531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10569059518081 + 2939667986116 = 3251009^2 + 1714546^2 .

It is a cyclic number.

It is not a de Polignac number, because 13508727504197 - 2⁸ = 13508727503941 is a prime.

It is a super-2 number, since 2×13508727504197² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13508727504127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6754363752098 + 6754363752099.

It is an arithmetic number, because the mean of its divisors is an integer number (6754363752099).

Almost surely, 2^{13508727504197} is an apocalyptic number.

It is an amenable number.

13508727504197 is a deficient number, since it is larger than the sum of its proper divisors (1).

13508727504197 is an equidigital number, since it uses as much as digits as its factorization.

13508727504197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14817600, while the sum is 59.

The spelling of 13508727504197 in words is "thirteen trillion, five hundred eight billion, seven hundred twenty-seven million, five hundred four thousand, one hundred ninety-seven".