499998777655843 has 2 divisors, whose sum is σ = 499998777655844. Its totient is φ = 499998777655842.

The previous prime is 499998777655691. The next prime is 499998777655847. The reversal of 499998777655843 is 348556777899994.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 499998777655843 - 2⁹ = 499998777655331 is a prime.

It is not a weakly prime, because it can be changed into another prime (499998777655847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249999388827921 + 249999388827922.

It is an arithmetic number, because the mean of its divisors is an integer number (249999388827922).

Almost surely, 2^{499998777655843} is an apocalyptic number.

499998777655843 is a deficient number, since it is larger than the sum of its proper divisors (1).

499998777655843 is an equidigital number, since it uses as much as digits as its factorization.

499998777655843 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1036994918400, while the sum is 100.

The spelling of 499998777655843 in words is "four hundred ninety-nine trillion, nine hundred ninety-eight billion, seven hundred seventy-seven million, six hundred fifty-five thousand, eight hundred forty-three".