100910000091 has 16 divisors (see below), whose sum is σ = 136493558784. Its totient is φ = 66306271584.

The previous prime is 100910000071. The next prime is 100910000101. The reversal of 100910000091 is 190000019001.

It is not a de Polignac number, because 100910000091 - 2⁷ = 100909999963 is a prime.

It is not an unprimeable number, because it can be changed into a prime (100910000071) 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, 734635 + ... + 861108.

It is an arithmetic number, because the mean of its divisors is an integer number (8530847424).

Almost surely, 2^100910000091 is an apocalyptic number.

100910000091 is a deficient number, since it is larger than the sum of its proper divisors (35583558693).

100910000091 is a wasteful number, since it uses less digits than its factorization.

100910000091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1596050.

The product of its (nonzero) digits is 81, while the sum is 21.

Adding to 100910000091 its reverse (190000019001), we get a palindrome (290910019092).

The spelling of 100910000091 in words is "one hundred billion, nine hundred ten million, ninety-one", and thus it is an aban number.