43054439899 has 2 divisors, whose sum is σ = 43054439900. Its totient is φ = 43054439898.

The previous prime is 43054439893. The next prime is 43054439929. The reversal of 43054439899 is 99893445034.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 43054439899 - 2⁹ = 43054439387 is a prime.

It is not a weakly prime, because it can be changed into another prime (43054439893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21527219949 + 21527219950.

It is an arithmetic number, because the mean of its divisors is an integer number (21527219950).

Almost surely, 2^43054439899 is an apocalyptic number.

43054439899 is a deficient number, since it is larger than the sum of its proper divisors (1).

43054439899 is an equidigital number, since it uses as much as digits as its factorization.

43054439899 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16796160, while the sum is 58.

The spelling of 43054439899 in words is "forty-three billion, fifty-four million, four hundred thirty-nine thousand, eight hundred ninety-nine".