91600000091 has 2 divisors, whose sum is σ = 91600000092. Its totient is φ = 91600000090.

The previous prime is 91600000021. The next prime is 91600000277. The reversal of 91600000091 is 19000000619.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 91600000091 - 2¹⁰ = 91599999067 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 91600000091.

It is not a weakly prime, because it can be changed into another prime (91600000001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45800000045 + 45800000046.

It is an arithmetic number, because the mean of its divisors is an integer number (45800000046).

Almost surely, 2^91600000091 is an apocalyptic number.

91600000091 is a deficient number, since it is larger than the sum of its proper divisors (1).

91600000091 is an equidigital number, since it uses as much as digits as its factorization.

91600000091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 486, while the sum is 26.

The spelling of 91600000091 in words is "ninety-one billion, six hundred million, ninety-one", and thus it is an aban number.