2199999999943 has 2 divisors, whose sum is σ = 2199999999944. Its totient is φ = 2199999999942.

The previous prime is 2199999999913. The next prime is 2200000000001. The reversal of 2199999999943 is 3499999999912.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2199999999943 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2199999999913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1099999999971 + 1099999999972.

It is an arithmetic number, because the mean of its divisors is an integer number (1099999999972).

Almost surely, 2^{2199999999943} is an apocalyptic number.

2199999999943 is a deficient number, since it is larger than the sum of its proper divisors (1).

2199999999943 is an equidigital number, since it uses as much as digits as its factorization.

2199999999943 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9298091736, while the sum is 91.

The spelling of 2199999999943 in words is "two trillion, one hundred ninety-nine billion, nine hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred forty-three".