91100010047 has 2 divisors, whose sum is σ = 91100010048. Its totient is φ = 91100010046.

The previous prime is 91100010013. The next prime is 91100010083. The reversal of 91100010047 is 74001000119.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 91100010047 - 2¹⁸ = 91099747903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91100010097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45550005023 + 45550005024.

It is an arithmetic number, because the mean of its divisors is an integer number (45550005024).

Almost surely, 2^91100010047 is an apocalyptic number.

91100010047 is a deficient number, since it is larger than the sum of its proper divisors (1).

91100010047 is an equidigital number, since it uses as much as digits as its factorization.

91100010047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 252, while the sum is 23.

The spelling of 91100010047 in words is "ninety-one billion, one hundred million, ten thousand, forty-seven".