115011827891 has 2 divisors, whose sum is σ = 115011827892. Its totient is φ = 115011827890.

The previous prime is 115011827857. The next prime is 115011827893. The reversal of 115011827891 is 198728110511.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-115011827891 is a prime.

Together with 115011827893, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (115011827893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57505913945 + 57505913946.

It is an arithmetic number, because the mean of its divisors is an integer number (57505913946).

Almost surely, 2^115011827891 is an apocalyptic number.

115011827891 is a deficient number, since it is larger than the sum of its proper divisors (1).

115011827891 is an equidigital number, since it uses as much as digits as its factorization.

115011827891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40320, while the sum is 44.

The spelling of 115011827891 in words is "one hundred fifteen billion, eleven million, eight hundred twenty-seven thousand, eight hundred ninety-one".