13656654769 has 2 divisors, whose sum is σ = 13656654770. Its totient is φ = 13656654768.

The previous prime is 13656654629. The next prime is 13656654779. The reversal of 13656654769 is 96745665631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10299611169 + 3357043600 = 101487^2 + 57940^2 .

It is an emirp because it is prime and its reverse (96745665631) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13656654769 is a prime.

It is a super-2 number, since 2×13656654769² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (13656654779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6828327384 + 6828327385.

It is an arithmetic number, because the mean of its divisors is an integer number (6828327385).

Almost surely, 2^13656654769 is an apocalyptic number.

It is an amenable number.

13656654769 is a deficient number, since it is larger than the sum of its proper divisors (1).

13656654769 is an equidigital number, since it uses as much as digits as its factorization.

13656654769 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24494400, while the sum is 58.

The spelling of 13656654769 in words is "thirteen billion, six hundred fifty-six million, six hundred fifty-four thousand, seven hundred sixty-nine".