5555557777799 has 2 divisors, whose sum is σ = 5555557777800. Its totient is φ = 5555557777798.

The previous prime is 5555557777793. The next prime is 5555557777811. The reversal of 5555557777799 is 9977777555555.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5555557777799 - 2²⁰ = 5555556729223 is a prime.

It is a Sophie Germain prime.

It is a plaindrome in base 10.

It is a zygodrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5555557777793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2777778888899 + 2777778888900.

It is an arithmetic number, because the mean of its divisors is an integer number (2777778888900).

Almost surely, 2^{5555557777799} is an apocalyptic number.

5555557777799 is a deficient number, since it is larger than the sum of its proper divisors (1).

5555557777799 is an equidigital number, since it uses as much as digits as its factorization.

5555557777799 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21271359375, while the sum is 83.

The spelling of 5555557777799 in words is "five trillion, five hundred fifty-five billion, five hundred fifty-seven million, seven hundred seventy-seven thousand, seven hundred ninety-nine".