91838200911 has 16 divisors (see below), whose sum is σ = 127786170624. Its totient is φ = 58558319424.

The previous prime is 91838200891. The next prime is 91838200933. The reversal of 91838200911 is 11900283819.

It is not a de Polignac number, because 91838200911 - 2¹¹ = 91838198863 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91838201911) 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 15 ways as a sum of consecutive naturals, for example, 823680 + ... + 928506.

It is an arithmetic number, because the mean of its divisors is an integer number (7986635664).

Almost surely, 2^91838200911 is an apocalyptic number.

91838200911 is a deficient number, since it is larger than the sum of its proper divisors (35947969713).

91838200911 is a wasteful number, since it uses less digits than its factorization.

91838200911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117550.

The product of its (nonzero) digits is 31104, while the sum is 42.

The spelling of 91838200911 in words is "ninety-one billion, eight hundred thirty-eight million, two hundred thousand, nine hundred eleven".