2043320043997 has 2 divisors, whose sum is σ = 2043320043998. Its totient is φ = 2043320043996.

The previous prime is 2043320043859. The next prime is 2043320044037. The reversal of 2043320043997 is 7993400233402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1463081357241 + 580238686756 = 1209579^2 + 761734^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2043320043997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2043320043697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1021660021998 + 1021660021999.

It is an arithmetic number, because the mean of its divisors is an integer number (1021660021999).

Almost surely, 2^{2043320043997} is an apocalyptic number.

It is an amenable number.

2043320043997 is a deficient number, since it is larger than the sum of its proper divisors (1).

2043320043997 is an equidigital number, since it uses as much as digits as its factorization.

2043320043997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 979776, while the sum is 46.

The spelling of 2043320043997 in words is "two trillion, forty-three billion, three hundred twenty million, forty-three thousand, nine hundred ninety-seven".