55566667789 has 8 divisors (see below), whose sum is σ = 58838488128. Its totient is φ = 52295202240.

The previous prime is 55566667777. The next prime is 55566667829. The reversal of 55566667789 is 98776666555.

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 55566667789 - 2¹¹ = 55566665741 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55566667489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 276834 + ... + 433324.

It is an arithmetic number, because the mean of its divisors is an integer number (7354811016).

Almost surely, 2^55566667789 is an apocalyptic number.

It is an amenable number.

55566667789 is a deficient number, since it is larger than the sum of its proper divisors (3271820339).

55566667789 is a wasteful number, since it uses less digits than its factorization.

55566667789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177395.

The product of its digits is 571536000, while the sum is 70.

The spelling of 55566667789 in words is "fifty-five billion, five hundred sixty-six million, six hundred sixty-seven thousand, seven hundred eighty-nine".