1317117577 has 2 divisors, whose sum is σ = 1317117578. Its totient is φ = 1317117576.

The previous prime is 1317117569. The next prime is 1317117587. The reversal of 1317117577 is 7757117131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1168545856 + 148571721 = 34184^2 + 12189^2 .

It is a cyclic number.

It is not a de Polignac number, because 1317117577 - 2³ = 1317117569 is a prime.

It is not a weakly prime, because it can be changed into another prime (1317117587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 658558788 + 658558789.

It is an arithmetic number, because the mean of its divisors is an integer number (658558789).

Almost surely, 2^1317117577 is an apocalyptic number.

It is an amenable number.

1317117577 is a deficient number, since it is larger than the sum of its proper divisors (1).

1317117577 is an equidigital number, since it uses as much as digits as its factorization.

1317117577 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36015, while the sum is 40.

The square root of 1317117577 is about 36292.1145291922. The cubic root of 1317117577 is about 1096.1622673525.

The spelling of 1317117577 in words is "one billion, three hundred seventeen million, one hundred seventeen thousand, five hundred seventy-seven".