55556222789 has 8 divisors (see below), whose sum is σ = 57390539520. Its totient is φ = 53724542400.

The previous prime is 55556222773. The next prime is 55556222791. The reversal of 55556222789 is 98722265555.

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 55556222789 - 2⁴ = 55556222773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55556222749) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 616199 + ... + 700580.

It is an arithmetic number, because the mean of its divisors is an integer number (7173817440).

Almost surely, 2^55556222789 is an apocalyptic number.

It is an amenable number.

55556222789 is a deficient number, since it is larger than the sum of its proper divisors (1834316731).

55556222789 is a wasteful number, since it uses less digits than its factorization.

55556222789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1318171.

The product of its digits is 15120000, while the sum is 56.

The spelling of 55556222789 in words is "fifty-five billion, five hundred fifty-six million, two hundred twenty-two thousand, seven hundred eighty-nine".