91236764327 has 4 divisors (see below), whose sum is σ = 91264256880. Its totient is φ = 91209271776.

The previous prime is 91236764207. The next prime is 91236764341. The reversal of 91236764327 is 72346763219.

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 91236764327 - 2⁸ = 91236764071 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 (91236734327) 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, 13741298 + ... + 13747935.

It is an arithmetic number, because the mean of its divisors is an integer number (22816064220).

Almost surely, 2^91236764327 is an apocalyptic number.

91236764327 is a deficient number, since it is larger than the sum of its proper divisors (27492553).

91236764327 is a wasteful number, since it uses less digits than its factorization.

91236764327 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27492552.

The product of its digits is 2286144, while the sum is 50.

The spelling of 91236764327 in words is "ninety-one billion, two hundred thirty-six million, seven hundred sixty-four thousand, three hundred twenty-seven".