623728258399 has 2 divisors, whose sum is σ = 623728258400. Its totient is φ = 623728258398.

The previous prime is 623728258379. The next prime is 623728258427. The reversal of 623728258399 is 993852827326.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 623728258399 - 2¹⁹ = 623727734111 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 623728258399.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (623728258339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311864129199 + 311864129200.

It is an arithmetic number, because the mean of its divisors is an integer number (311864129200).

Almost surely, 2^623728258399 is an apocalyptic number.

623728258399 is a deficient number, since it is larger than the sum of its proper divisors (1).

623728258399 is an equidigital number, since it uses as much as digits as its factorization.

623728258399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 78382080, while the sum is 64.

The spelling of 623728258399 in words is "six hundred twenty-three billion, seven hundred twenty-eight million, two hundred fifty-eight thousand, three hundred ninety-nine".