911990116291 has 2 divisors, whose sum is σ = 911990116292. Its totient is φ = 911990116290.

The previous prime is 911990116187. The next prime is 911990116307. The reversal of 911990116291 is 192611099119.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 911990116291 - 2¹⁵ = 911990083523 is a prime.

It is not a weakly prime, because it can be changed into another prime (911990116591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 455995058145 + 455995058146.

It is an arithmetic number, because the mean of its divisors is an integer number (455995058146).

Almost surely, 2^911990116291 is an apocalyptic number.

911990116291 is a deficient number, since it is larger than the sum of its proper divisors (1).

911990116291 is an equidigital number, since it uses as much as digits as its factorization.

911990116291 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 78732, while the sum is 49.

The spelling of 911990116291 in words is "nine hundred eleven billion, nine hundred ninety million, one hundred sixteen thousand, two hundred ninety-one".