91263365911 has 4 divisors (see below), whose sum is σ = 91790899992. Its totient is φ = 90735831832.

The previous prime is 91263365891. The next prime is 91263365917. The reversal of 91263365911 is 11956336219.

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 91263365911 - 2³¹ = 89115882263 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 (91263365917) 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, 263766781 + ... + 263767126.

It is an arithmetic number, because the mean of its divisors is an integer number (22947724998).

Almost surely, 2^91263365911 is an apocalyptic number.

91263365911 is a deficient number, since it is larger than the sum of its proper divisors (527534081).

91263365911 is a wasteful number, since it uses less digits than its factorization.

91263365911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 527534080.

The product of its digits is 262440, while the sum is 46.

The spelling of 91263365911 in words is "ninety-one billion, two hundred sixty-three million, three hundred sixty-five thousand, nine hundred eleven".