505746718999 has 2 divisors, whose sum is σ = 505746719000. Its totient is φ = 505746718998.

The previous prime is 505746718969. The next prime is 505746719033. The reversal of 505746718999 is 999817647505.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 505746718999 - 2²¹ = 505744621847 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (505746718909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252873359499 + 252873359500.

It is an arithmetic number, because the mean of its divisors is an integer number (252873359500).

Almost surely, 2^505746718999 is an apocalyptic number.

505746718999 is a deficient number, since it is larger than the sum of its proper divisors (1).

505746718999 is an equidigital number, since it uses as much as digits as its factorization.

505746718999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 171460800, while the sum is 70.

The spelling of 505746718999 in words is "five hundred five billion, seven hundred forty-six million, seven hundred eighteen thousand, nine hundred ninety-nine".