13635264157 has 2 divisors, whose sum is σ = 13635264158. Its totient is φ = 13635264156.

The previous prime is 13635264127. The next prime is 13635264169. The reversal of 13635264157 is 75146253631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11453066361 + 2182197796 = 107019^2 + 46714^2 .

It is a cyclic number.

It is not a de Polignac number, because 13635264157 - 2⁷ = 13635264029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13635264107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6817632078 + 6817632079.

It is an arithmetic number, because the mean of its divisors is an integer number (6817632079).

Almost surely, 2^13635264157 is an apocalyptic number.

It is an amenable number.

13635264157 is a deficient number, since it is larger than the sum of its proper divisors (1).

13635264157 is an equidigital number, since it uses as much as digits as its factorization.

13635264157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 453600, while the sum is 43.

The spelling of 13635264157 in words is "thirteen billion, six hundred thirty-five million, two hundred sixty-four thousand, one hundred fifty-seven".