1115511056017 has 2 divisors, whose sum is σ = 1115511056018. Its totient is φ = 1115511056016.

The previous prime is 1115511055999. The next prime is 1115511056029. The reversal of 1115511056017 is 7106501155111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 739859742801 + 375651313216 = 860151^2 + 612904^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1115511056017 is a prime.

It is not a weakly prime, because it can be changed into another prime (1115511086017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 557755528008 + 557755528009.

It is an arithmetic number, because the mean of its divisors is an integer number (557755528009).

Almost surely, 2^{1115511056017} is an apocalyptic number.

It is an amenable number.

1115511056017 is a deficient number, since it is larger than the sum of its proper divisors (1).

1115511056017 is an equidigital number, since it uses as much as digits as its factorization.

1115511056017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5250, while the sum is 34.

The spelling of 1115511056017 in words is "one trillion, one hundred fifteen billion, five hundred eleven million, fifty-six thousand, seventeen".