10909191818291 has 8 divisors (see below), whose sum is σ = 11753138152560. Its totient is φ = 10065928017312.

The previous prime is 10909191818251. The next prime is 10909191818333. The reversal of 10909191818291 is 19281819190901.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10909191818291 is a prime.

It is a super-2 number, since 2×10909191818291² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10909191818291.

It is not an unprimeable number, because it can be changed into a prime (10909191818251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 170600120 + ... + 170664053.

It is an arithmetic number, because the mean of its divisors is an integer number (1469142269070).

Almost surely, 2^{10909191818291} is an apocalyptic number.

10909191818291 is a deficient number, since it is larger than the sum of its proper divisors (843946334269).

10909191818291 is a wasteful number, since it uses less digits than its factorization.

10909191818291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341266645.

The product of its (nonzero) digits is 839808, while the sum is 59.

The spelling of 10909191818291 in words is "ten trillion, nine hundred nine billion, one hundred ninety-one million, eight hundred eighteen thousand, two hundred ninety-one".