91586502013 has 4 divisors (see below), whose sum is σ = 93535151040. Its totient is φ = 89637852988.

The previous prime is 91586502001. The next prime is 91586502023. The reversal of 91586502013 is 31020568519.

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.

It is a cyclic number.

It is not a de Polignac number, because 91586502013 - 2³³ = 82996567421 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 (91586502023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 974324443 + ... + 974324536.

It is an arithmetic number, because the mean of its divisors is an integer number (23383787760).

Almost surely, 2^91586502013 is an apocalyptic number.

It is an amenable number.

91586502013 is a deficient number, since it is larger than the sum of its proper divisors (1948649027).

91586502013 is a wasteful number, since it uses less digits than its factorization.

91586502013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1948649026.

The product of its (nonzero) digits is 64800, while the sum is 40.

The spelling of 91586502013 in words is "ninety-one billion, five hundred eighty-six million, five hundred two thousand, thirteen".