91111100110 has 16 divisors (see below), whose sum is σ = 164114451216. Its totient is φ = 36419002048.

The previous prime is 91111100107. The next prime is 91111100137. The reversal of 91111100110 is 1100111119.

It is a congruent number.

It is an unprimeable number.

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, 3164704 + ... + 3193363.

It is an arithmetic number, because the mean of its divisors is an integer number (10257153201).

Almost surely, 2^91111100110 is an apocalyptic number.

91111100110 is a deficient number, since it is larger than the sum of its proper divisors (73003351106).

91111100110 is a wasteful number, since it uses less digits than its factorization.

91111100110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6359507.

The product of its (nonzero) digits is 9, while the sum is 16.

Adding to 91111100110 its reverse (1100111119), we get a palindrome (92211211229).

The spelling of 91111100110 in words is "ninety-one billion, one hundred eleven million, one hundred thousand, one hundred ten".