2191899267041 has 16 divisors (see below), whose sum is σ = 2415777220800. Its totient is φ = 1972139064000.

The previous prime is 2191899266993. The next prime is 2191899267043. The reversal of 2191899267041 is 1407629981912.

It is a cyclic number.

It is not a de Polignac number, because 2191899267041 - 2¹⁰ = 2191899266017 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2191899267043) 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, 2482775 + ... + 3247763.

It is an arithmetic number, because the mean of its divisors is an integer number (150986076300).

Almost surely, 2^{2191899267041} is an apocalyptic number.

It is an amenable number.

2191899267041 is a deficient number, since it is larger than the sum of its proper divisors (223877953759).

2191899267041 is a wasteful number, since it uses less digits than its factorization.

2191899267041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 767680.

The product of its (nonzero) digits is 3919104, while the sum is 59.

The spelling of 2191899267041 in words is "two trillion, one hundred ninety-one billion, eight hundred ninety-nine million, two hundred sixty-seven thousand, forty-one".