91104149085 has 16 divisors (see below), whose sum is σ = 153438567360. Its totient is φ = 46031569920.

The previous prime is 91104149053. The next prime is 91104149113. The reversal of 91104149085 is 58094140119.

It is not a de Polignac number, because 91104149085 - 2⁵ = 91104149053 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 159831556 + ... + 159832125.

It is an arithmetic number, because the mean of its divisors is an integer number (9589910460).

Almost surely, 2^91104149085 is an apocalyptic number.

91104149085 is a gapful number since it is divisible by the number (95) formed by its first and last digit.

It is an amenable number.

91104149085 is a deficient number, since it is larger than the sum of its proper divisors (62334418275).

91104149085 is a wasteful number, since it uses less digits than its factorization.

91104149085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319663708.

The product of its (nonzero) digits is 51840, while the sum is 42.

The spelling of 91104149085 in words is "ninety-one billion, one hundred four million, one hundred forty-nine thousand, eighty-five".