10000000909191 has 16 divisors (see below), whose sum is σ = 13699050702944. Its totient is φ = 6483950135424.

The previous prime is 10000000909187. The next prime is 10000000909201. The reversal of 10000000909191 is 19190900000001.

It is not a de Polignac number, because 10000000909191 - 2² = 10000000909187 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10000000909141) 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, 17332540 + ... + 17900193.

It is an arithmetic number, because the mean of its divisors is an integer number (856190668934).

Almost surely, 2^{10000000909191} is an apocalyptic number.

10000000909191 is a deficient number, since it is larger than the sum of its proper divisors (3699049793753).

10000000909191 is a wasteful number, since it uses less digits than its factorization.

10000000909191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35235330.

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

Adding to 10000000909191 its reverse (19190900000001), we get a palindrome (29190900909192).

The spelling of 10000000909191 in words is "ten trillion, nine hundred nine thousand, one hundred ninety-one".