10091191209 has 16 divisors (see below), whose sum is σ = 14698156224. Its totient is φ = 6107515200.

The previous prime is 10091191183. The next prime is 10091191217. The reversal of 10091191209 is 90219119001.

It is not a de Polignac number, because 10091191209 - 2²⁸ = 9822755753 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a self number, because there is not a number n which added to its sum of digits gives 10091191209.

It is not an unprimeable number, because it can be changed into a prime (10091190209) 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, 184402 + ... + 232779.

It is an arithmetic number, because the mean of its divisors is an integer number (918634764).

Almost surely, 2^10091191209 is an apocalyptic number.

It is an amenable number.

10091191209 is a deficient number, since it is larger than the sum of its proper divisors (4606965015).

10091191209 is a wasteful number, since it uses less digits than its factorization.

10091191209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417928.

The product of its (nonzero) digits is 1458, while the sum is 33.

The spelling of 10091191209 in words is "ten billion, ninety-one million, one hundred ninety-one thousand, two hundred nine".