55044437689 has 16 divisors (see below), whose sum is σ = 56783586240. Its totient is φ = 53333199360.

The previous prime is 55044437681. The next prime is 55044437699. The reversal of 55044437689 is 98673444055.

It is a cyclic number.

It is not a de Polignac number, because 55044437689 - 2³ = 55044437681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55044437681) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7796449 + ... + 7803505.

It is an arithmetic number, because the mean of its divisors is an integer number (3548974140).

Almost surely, 2^55044437689 is an apocalyptic number.

55044437689 is a gapful number since it is divisible by the number (59) formed by its first and last digit.

It is an amenable number.

55044437689 is a deficient number, since it is larger than the sum of its proper divisors (1739148551).

55044437689 is a wasteful number, since it uses less digits than its factorization.

55044437689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9000.

The product of its (nonzero) digits is 14515200, while the sum is 55.

The spelling of 55044437689 in words is "fifty-five billion, forty-four million, four hundred thirty-seven thousand, six hundred eighty-nine".