43091198099 has 2 divisors, whose sum is σ = 43091198100. Its totient is φ = 43091198098.

The previous prime is 43091198021. The next prime is 43091198113. The reversal of 43091198099 is 99089119034.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 43091198099 - 2¹⁶ = 43091132563 is a prime.

It is a super-2 number, since 2×43091198099² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 43091198099.

It is not a weakly prime, because it can be changed into another prime (43091698099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21545599049 + 21545599050.

It is an arithmetic number, because the mean of its divisors is an integer number (21545599050).

Almost surely, 2^43091198099 is an apocalyptic number.

43091198099 is a deficient number, since it is larger than the sum of its proper divisors (1).

43091198099 is an equidigital number, since it uses as much as digits as its factorization.

43091198099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 629856, while the sum is 53.

The spelling of 43091198099 in words is "forty-three billion, ninety-one million, one hundred ninety-eight thousand, ninety-nine".