5555555277778 has 32 divisors (see below), whose sum is σ = 9115116468480. Its totient is φ = 2518532016000.

The previous prime is 5555555277773. The next prime is 5555555277787. The reversal of 5555555277778 is 8777725555555.

It is a self number, because there is not a number n which added to its sum of digits gives 5555555277778.

It is not an unprimeable number, because it can be changed into a prime (5555555277773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28053388 + ... + 28250728.

It is an arithmetic number, because the mean of its divisors is an integer number (284847389640).

Almost surely, 2^{5555555277778} is an apocalyptic number.

5555555277778 is a deficient number, since it is larger than the sum of its proper divisors (3559561190702).

5555555277778 is a wasteful number, since it uses less digits than its factorization.

5555555277778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200754.

The product of its digits is 3001250000, while the sum is 73.

The spelling of 5555555277778 in words is "five trillion, five hundred fifty-five billion, five hundred fifty-five million, two hundred seventy-seven thousand, seven hundred seventy-eight".