623043445063439 has 2 divisors, whose sum is σ = 623043445063440. Its totient is φ = 623043445063438.

The previous prime is 623043445063411. The next prime is 623043445063463. The reversal of 623043445063439 is 934360544340326.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-623043445063439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (623043445063409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311521722531719 + 311521722531720.

It is an arithmetic number, because the mean of its divisors is an integer number (311521722531720).

Almost surely, 2^{623043445063439} is an apocalyptic number.

623043445063439 is a deficient number, since it is larger than the sum of its proper divisors (1).

623043445063439 is an equidigital number, since it uses as much as digits as its factorization.

623043445063439 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 67184640, while the sum is 56.

The spelling of 623043445063439 in words is "six hundred twenty-three trillion, forty-three billion, four hundred forty-five million, sixty-three thousand, four hundred thirty-nine".