91335005071 has 4 divisors (see below), whose sum is σ = 95306092272. Its totient is φ = 87363917872.

The previous prime is 91335005063. The next prime is 91335005149. The reversal of 91335005071 is 17050053319.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 91335005071 - 2³ = 91335005063 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 (91335005011) 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, 1985543566 + ... + 1985543611.

It is an arithmetic number, because the mean of its divisors is an integer number (23826523068).

Almost surely, 2^91335005071 is an apocalyptic number.

91335005071 is a deficient number, since it is larger than the sum of its proper divisors (3971087201).

91335005071 is a wasteful number, since it uses less digits than its factorization.

91335005071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3971087200.

The product of its (nonzero) digits is 14175, while the sum is 34.

The spelling of 91335005071 in words is "ninety-one billion, three hundred thirty-five million, five thousand, seventy-one".