55555328989 has 8 divisors (see below), whose sum is σ = 55768264352. Its totient is φ = 55342511280.

The previous prime is 55555328987. The next prime is 55555328999. The reversal of 55555328989 is 98982355555.

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 55555328989 - 2¹ = 55555328987 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55555328989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55555328981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 983107 + ... + 1038079.

It is an arithmetic number, because the mean of its divisors is an integer number (6971033044).

Almost surely, 2^55555328989 is an apocalyptic number.

It is an amenable number.

55555328989 is a deficient number, since it is larger than the sum of its proper divisors (212935363).

55555328989 is a wasteful number, since it uses less digits than its factorization.

55555328989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58827.

The product of its digits is 97200000, while the sum is 64.

The spelling of 55555328989 in words is "fifty-five billion, five hundred fifty-five million, three hundred twenty-eight thousand, nine hundred eighty-nine".