1115171316997 has 2 divisors, whose sum is σ = 1115171316998. Its totient is φ = 1115171316996.

The previous prime is 1115171316949. The next prime is 1115171317027. The reversal of 1115171316997 is 7996131715111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 626557734916 + 488613582081 = 791554^2 + 699009^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1115171316997 is a prime.

It is a super-2 number, since 2×1115171316997² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1115171311997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 557585658498 + 557585658499.

It is an arithmetic number, because the mean of its divisors is an integer number (557585658499).

Almost surely, 2^{1115171316997} is an apocalyptic number.

It is an amenable number.

1115171316997 is a deficient number, since it is larger than the sum of its proper divisors (1).

1115171316997 is an equidigital number, since it uses as much as digits as its factorization.

1115171316997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 357210, while the sum is 52.

The spelling of 1115171316997 in words is "one trillion, one hundred fifteen billion, one hundred seventy-one million, three hundred sixteen thousand, nine hundred ninety-seven".