43240443299 has 2 divisors, whose sum is σ = 43240443300. Its totient is φ = 43240443298.

The previous prime is 43240443251. The next prime is 43240443343. The reversal of 43240443299 is 99234404234.

It is an a-pointer prime, because the next prime (43240443343) can be obtained adding 43240443299 to its sum of digits (44).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 43240443299 - 2²⁸ = 42972007843 is a prime.

It is not a weakly prime, because it can be changed into another prime (43240473299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21620221649 + 21620221650.

It is an arithmetic number, because the mean of its divisors is an integer number (21620221650).

Almost surely, 2^43240443299 is an apocalyptic number.

43240443299 is a deficient number, since it is larger than the sum of its proper divisors (1).

43240443299 is an equidigital number, since it uses as much as digits as its factorization.

43240443299 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 746496, while the sum is 44.

The spelling of 43240443299 in words is "forty-three billion, two hundred forty million, four hundred forty-three thousand, two hundred ninety-nine".