909101000091 has 4 divisors (see below), whose sum is σ = 1212134666792. Its totient is φ = 606067333392.

The previous prime is 909101000039. The next prime is 909101000141. The reversal of 909101000091 is 190000101909.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-909101000091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (909101000891) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 151516833346 + ... + 151516833351.

It is an arithmetic number, because the mean of its divisors is an integer number (303033666698).

Almost surely, 2^909101000091 is an apocalyptic number.

909101000091 is a deficient number, since it is larger than the sum of its proper divisors (303033666701).

909101000091 is a wasteful number, since it uses less digits than its factorization.

909101000091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303033666700.

The product of its (nonzero) digits is 729, while the sum is 30.

The spelling of 909101000091 in words is "nine hundred nine billion, one hundred one million, ninety-one", and thus it is an aban number.