91342009811 has 16 divisors (see below), whose sum is σ = 98648147808. Its totient is φ = 84076185600.

The previous prime is 91342009807. The next prime is 91342009823. The reversal of 91342009811 is 11890024319.

It is a cyclic number.

It is not a de Polignac number, because 91342009811 - 2² = 91342009807 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91342008811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7277201 + ... + 7289741.

It is an arithmetic number, because the mean of its divisors is an integer number (6165509238).

Almost surely, 2^91342009811 is an apocalyptic number.

91342009811 is a deficient number, since it is larger than the sum of its proper divisors (7306137997).

91342009811 is a wasteful number, since it uses less digits than its factorization.

91342009811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14102.

The product of its (nonzero) digits is 15552, while the sum is 38.

The spelling of 91342009811 in words is "ninety-one billion, three hundred forty-two million, nine thousand, eight hundred eleven".