115111911571 has 2 divisors, whose sum is σ = 115111911572. Its totient is φ = 115111911570.

The previous prime is 115111911533. The next prime is 115111911613. The reversal of 115111911571 is 175119111511.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-115111911571 is a prime.

It is not a weakly prime, because it can be changed into another prime (115111911371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57555955785 + 57555955786.

It is an arithmetic number, because the mean of its divisors is an integer number (57555955786).

Almost surely, 2^115111911571 is an apocalyptic number.

115111911571 is a deficient number, since it is larger than the sum of its proper divisors (1).

115111911571 is an equidigital number, since it uses as much as digits as its factorization.

115111911571 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1575, while the sum is 34.

The spelling of 115111911571 in words is "one hundred fifteen billion, one hundred eleven million, nine hundred eleven thousand, five hundred seventy-one".