55555855555 has 8 divisors (see below), whose sum is σ = 66711510000. Its totient is φ = 44415028896.

The previous prime is 55555855529. The next prime is 55555855561.

55555855555 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55555855555 - 2¹⁹ = 55555331267 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55555855555.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 3698700 + ... + 3713689.

It is an arithmetic number, because the mean of its divisors is an integer number (8338938750).

Almost surely, 2^55555855555 is an apocalyptic number.

55555855555 is a deficient number, since it is larger than the sum of its proper divisors (11155654445).

55555855555 is a wasteful number, since it uses less digits than its factorization.

55555855555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7413893.

The product of its digits is 78125000, while the sum is 58.

The spelling of 55555855555 in words is "fifty-five billion, five hundred fifty-five million, eight hundred fifty-five thousand, five hundred fifty-five".