91058350817 has 4 divisors (see below), whose sum is σ = 104066686656. Its totient is φ = 78050014980.

The previous prime is 91058350783. The next prime is 91058350829. The reversal of 91058350817 is 71805385019.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 71805385019 = 57059 ⋅1258441.

It is not a de Polignac number, because 91058350817 - 2⁶ = 91058350753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91058350847) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6504167909 + ... + 6504167922.

It is an arithmetic number, because the mean of its divisors is an integer number (26016671664).

Almost surely, 2^91058350817 is an apocalyptic number.

It is an amenable number.

91058350817 is a deficient number, since it is larger than the sum of its proper divisors (13008335839).

91058350817 is a wasteful number, since it uses less digits than its factorization.

91058350817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13008335838.

The product of its (nonzero) digits is 302400, while the sum is 47.

The spelling of 91058350817 in words is "ninety-one billion, fifty-eight million, three hundred fifty thousand, eight hundred seventeen".