91845420967 has 16 divisors (see below), whose sum is σ = 92764818432. Its totient is φ = 90931714720.

The previous prime is 91845420943. The next prime is 91845420973. The reversal of 91845420967 is 76902454819.

It is a cyclic number.

It is not a de Polignac number, because 91845420967 - 2²⁷ = 91711203239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91845420167) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58019058 + ... + 58020640.

It is an arithmetic number, because the mean of its divisors is an integer number (5797801152).

Almost surely, 2^91845420967 is an apocalyptic number.

91845420967 is a deficient number, since it is larger than the sum of its proper divisors (919397465).

91845420967 is a wasteful number, since it uses less digits than its factorization.

91845420967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3038.

The product of its (nonzero) digits is 4354560, while the sum is 55.

The spelling of 91845420967 in words is "ninety-one billion, eight hundred forty-five million, four hundred twenty thousand, nine hundred sixty-seven".