43241105209991 has 16 divisors (see below), whose sum is σ = 47143903978080. Its totient is φ = 39421687979520.

The previous prime is 43241105209957. The next prime is 43241105209997. The reversal of 43241105209991 is 19990250114234.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 43241105209991 - 2²² = 43241101015687 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43241105209997) 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, 20141150 + ... + 22184411.

It is an arithmetic number, because the mean of its divisors is an integer number (2946493998630).

Almost surely, 2^{43241105209991} is an apocalyptic number.

43241105209991 is a deficient number, since it is larger than the sum of its proper divisors (3902798768089).

43241105209991 is a wasteful number, since it uses less digits than its factorization.

43241105209991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42326546.

The product of its (nonzero) digits is 699840, while the sum is 50.

The spelling of 43241105209991 in words is "forty-three trillion, two hundred forty-one billion, one hundred five million, two hundred nine thousand, nine hundred ninety-one".