136763683657 has 2 divisors, whose sum is σ = 136763683658. Its totient is φ = 136763683656.

The previous prime is 136763683621. The next prime is 136763683699. The reversal of 136763683657 is 756386367631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 121319159481 + 15444524176 = 348309^2 + 124276^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136763683657 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 136763683595 and 136763683604.

It is not a weakly prime, because it can be changed into another prime (136763683607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68381841828 + 68381841829.

It is an arithmetic number, because the mean of its divisors is an integer number (68381841829).

Almost surely, 2^136763683657 is an apocalyptic number.

It is an amenable number.

136763683657 is a deficient number, since it is larger than the sum of its proper divisors (1).

136763683657 is an equidigital number, since it uses as much as digits as its factorization.

136763683657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 68584320, while the sum is 61.

The spelling of 136763683657 in words is "one hundred thirty-six billion, seven hundred sixty-three million, six hundred eighty-three thousand, six hundred fifty-seven".