91807725059 has 2 divisors, whose sum is σ = 91807725060. Its totient is φ = 91807725058.

The previous prime is 91807725011. The next prime is 91807725143. The reversal of 91807725059 is 95052770819.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 91807725059 - 2²⁸ = 91539289603 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 91807725059.

It is not a weakly prime, because it can be changed into another prime (91807725959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45903862529 + 45903862530.

It is an arithmetic number, because the mean of its divisors is an integer number (45903862530).

Almost surely, 2^91807725059 is an apocalyptic number.

91807725059 is a deficient number, since it is larger than the sum of its proper divisors (1).

91807725059 is an equidigital number, since it uses as much as digits as its factorization.

91807725059 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1587600, while the sum is 53.

The spelling of 91807725059 in words is "ninety-one billion, eight hundred seven million, seven hundred twenty-five thousand, fifty-nine".