13648196777 has 2 divisors, whose sum is σ = 13648196778. Its totient is φ = 13648196776.

The previous prime is 13648196773. The next prime is 13648196797. The reversal of 13648196777 is 77769184631.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12559460761 + 1088736016 = 112069^2 + 32996^2 .

It is a cyclic number.

It is not a de Polignac number, because 13648196777 - 2² = 13648196773 is a prime.

It is not a weakly prime, because it can be changed into another prime (13648196773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6824098388 + 6824098389.

It is an arithmetic number, because the mean of its divisors is an integer number (6824098389).

Almost surely, 2^13648196777 is an apocalyptic number.

It is an amenable number.

13648196777 is a deficient number, since it is larger than the sum of its proper divisors (1).

13648196777 is an equidigital number, since it uses as much as digits as its factorization.

13648196777 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10668672, while the sum is 59.

The spelling of 13648196777 in words is "thirteen billion, six hundred forty-eight million, one hundred ninety-six thousand, seven hundred seventy-seven".