13159765477 has 2 divisors, whose sum is σ = 13159765478. Its totient is φ = 13159765476.

The previous prime is 13159765447. The next prime is 13159765511. The reversal of 13159765477 is 77456795131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12230369281 + 929396196 = 110591^2 + 30486^2 .

It is a cyclic number.

It is not a de Polignac number, because 13159765477 - 2⁷ = 13159765349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13159765447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6579882738 + 6579882739.

It is an arithmetic number, because the mean of its divisors is an integer number (6579882739).

Almost surely, 2^13159765477 is an apocalyptic number.

It is an amenable number.

13159765477 is a deficient number, since it is larger than the sum of its proper divisors (1).

13159765477 is an equidigital number, since it uses as much as digits as its factorization.

13159765477 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5556600, while the sum is 55.

The spelling of 13159765477 in words is "thirteen billion, one hundred fifty-nine million, seven hundred sixty-five thousand, four hundred seventy-seven".