766636360613 has 2 divisors, whose sum is σ = 766636360614. Its totient is φ = 766636360612.

The previous prime is 766636360597. The next prime is 766636360627. The reversal of 766636360613 is 316063636667.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 559194370849 + 207441989764 = 747793^2 + 455458^2 .

It is a cyclic number.

It is not a de Polignac number, because 766636360613 - 2⁴ = 766636360597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (766636360213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 383318180306 + 383318180307.

It is an arithmetic number, because the mean of its divisors is an integer number (383318180307).

Almost surely, 2^766636360613 is an apocalyptic number.

It is an amenable number.

766636360613 is a deficient number, since it is larger than the sum of its proper divisors (1).

766636360613 is an equidigital number, since it uses as much as digits as its factorization.

766636360613 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8817984, while the sum is 53.

The spelling of 766636360613 in words is "seven hundred sixty-six billion, six hundred thirty-six million, three hundred sixty thousand, six hundred thirteen".