43233316993 has 2 divisors, whose sum is σ = 43233316994. Its totient is φ = 43233316992.

The previous prime is 43233316969. The next prime is 43233317077. The reversal of 43233316993 is 39961333234.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28820834289 + 14412482704 = 169767^2 + 120052^2 .

It is a cyclic number.

It is not a de Polignac number, because 43233316993 - 2¹⁷ = 43233185921 is a prime.

It is not a weakly prime, because it can be changed into another prime (43233316963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21616658496 + 21616658497.

It is an arithmetic number, because the mean of its divisors is an integer number (21616658497).

Almost surely, 2^43233316993 is an apocalyptic number.

It is an amenable number.

43233316993 is a deficient number, since it is larger than the sum of its proper divisors (1).

43233316993 is an equidigital number, since it uses as much as digits as its factorization.

43233316993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 944784, while the sum is 46.

The spelling of 43233316993 in words is "forty-three billion, two hundred thirty-three million, three hundred sixteen thousand, nine hundred ninety-three".