4033243420391 has 2 divisors, whose sum is σ = 4033243420392. Its totient is φ = 4033243420390.

The previous prime is 4033243420231. The next prime is 4033243420429. The reversal of 4033243420391 is 1930243423304.

It is an a-pointer prime, because the next prime (4033243420429) can be obtained adding 4033243420391 to its sum of digits (38).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4033243420391 - 2¹⁸ = 4033243158247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4033243420091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2016621710195 + 2016621710196.

It is an arithmetic number, because the mean of its divisors is an integer number (2016621710196).

Almost surely, 2^{4033243420391} is an apocalyptic number.

4033243420391 is a deficient number, since it is larger than the sum of its proper divisors (1).

4033243420391 is an equidigital number, since it uses as much as digits as its factorization.

4033243420391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 186624, while the sum is 38.

Adding to 4033243420391 its reverse (1930243423304), we get a palindrome (5963486843695).

The spelling of 4033243420391 in words is "four trillion, thirty-three billion, two hundred forty-three million, four hundred twenty thousand, three hundred ninety-one".