91495985632811 has 8 divisors (see below), whose sum is σ = 91733044483200. Its totient is φ = 91259224784640.

The previous prime is 91495985632801. The next prime is 91495985632859. The reversal of 91495985632811 is 11823658959419.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91495985632811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91495985632801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73885691 + ... + 75113828.

It is an arithmetic number, because the mean of its divisors is an integer number (11466630560400).

Almost surely, 2^{91495985632811} is an apocalyptic number.

91495985632811 is a deficient number, since it is larger than the sum of its proper divisors (237058850389).

91495985632811 is a wasteful number, since it uses less digits than its factorization.

91495985632811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149001109.

The product of its digits is 167961600, while the sum is 71.

The spelling of 91495985632811 in words is "ninety-one trillion, four hundred ninety-five billion, nine hundred eighty-five million, six hundred thirty-two thousand, eight hundred eleven".