3117788970557 has 2 divisors, whose sum is σ = 3117788970558. Its totient is φ = 3117788970556.

The previous prime is 3117788970497. The next prime is 3117788970607. The reversal of 3117788970557 is 7550798877113.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2644067871481 + 473721099076 = 1626059^2 + 688274^2 .

It is a cyclic number.

It is not a de Polignac number, because 3117788970557 - 2²⁰ = 3117787921981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3117788900557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1558894485278 + 1558894485279.

It is an arithmetic number, because the mean of its divisors is an integer number (1558894485279).

Almost surely, 2^{3117788970557} is an apocalyptic number.

It is an amenable number.

3117788970557 is a deficient number, since it is larger than the sum of its proper divisors (1).

3117788970557 is an equidigital number, since it uses as much as digits as its factorization.

3117788970557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 103723200, while the sum is 68.

The spelling of 3117788970557 in words is "three trillion, one hundred seventeen billion, seven hundred eighty-eight million, nine hundred seventy thousand, five hundred fifty-seven".