623404332791 has 2 divisors, whose sum is σ = 623404332792. Its totient is φ = 623404332790.

The previous prime is 623404332743. The next prime is 623404332841. The reversal of 623404332791 is 197233404326.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 623404332791 - 2¹⁸ = 623404070647 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (623404332721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311702166395 + 311702166396.

It is an arithmetic number, because the mean of its divisors is an integer number (311702166396).

Almost surely, 2^623404332791 is an apocalyptic number.

623404332791 is a deficient number, since it is larger than the sum of its proper divisors (1).

623404332791 is an equidigital number, since it uses as much as digits as its factorization.

623404332791 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 653184, while the sum is 44.

The spelling of 623404332791 in words is "six hundred twenty-three billion, four hundred four million, three hundred thirty-two thousand, seven hundred ninety-one".