91584989211 has 16 divisors (see below), whose sum is σ = 122585703200. Its totient is φ = 60820892928.

The previous prime is 91584989207. The next prime is 91584989257. The reversal of 91584989211 is 11298948519.

It is not a de Polignac number, because 91584989211 - 2² = 91584989207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91584989201) 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, 817305 + ... + 922581.

It is an arithmetic number, because the mean of its divisors is an integer number (7661606450).

Almost surely, 2^91584989211 is an apocalyptic number.

91584989211 is a deficient number, since it is larger than the sum of its proper divisors (31000713989).

91584989211 is a wasteful number, since it uses less digits than its factorization.

91584989211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106398.

The product of its digits is 1866240, while the sum is 57.

The spelling of 91584989211 in words is "ninety-one billion, five hundred eighty-four million, nine hundred eighty-nine thousand, two hundred eleven".