91275783846 has 16 divisors (see below), whose sum is σ = 196593996144. Its totient is φ = 28084856544.

The previous prime is 91275783839. The next prime is 91275783847. The reversal of 91275783846 is 64838757219.

It is a self number, because there is not a number n which added to its sum of digits gives 91275783846.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91275783847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 585101101 + ... + 585101256.

It is an arithmetic number, because the mean of its divisors is an integer number (12287124759).

Almost surely, 2^91275783846 is an apocalyptic number.

91275783846 is an abundant number, since it is smaller than the sum of its proper divisors (105318212298).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91275783846 is a wasteful number, since it uses less digits than its factorization.

91275783846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1170202375.

The product of its digits is 20321280, while the sum is 60.

The spelling of 91275783846 in words is "ninety-one billion, two hundred seventy-five million, seven hundred eighty-three thousand, eight hundred forty-six".