91011110013 has 12 divisors (see below), whose sum is σ = 131465563840. Its totient is φ = 60671732616.

The previous prime is 91011109997. The next prime is 91011110023. The reversal of 91011110013 is 31001111019.

It is not a de Polignac number, because 91011110013 - 2⁴ = 91011109997 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 (91011110023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 70170 + ... + 432372.

Almost surely, 2^91011110013 is an apocalyptic number.

It is an amenable number.

91011110013 is a deficient number, since it is larger than the sum of its proper divisors (40454453827).

91011110013 is a wasteful number, since it uses less digits than its factorization.

91011110013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390128 (or 390125 counting only the distinct ones).

The product of its (nonzero) digits is 27, while the sum is 18.

The spelling of 91011110013 in words is "ninety-one billion, eleven million, one hundred ten thousand, thirteen".