55828105123 has 4 divisors (see below), whose sum is σ = 63803548720. Its totient is φ = 47852661528.

The previous prime is 55828105097. The next prime is 55828105139. The reversal of 55828105123 is 32150182855.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 55828105123 - 2²¹ = 55826007971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55828106123) 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 3 ways as a sum of consecutive naturals, for example, 3987721788 + ... + 3987721801.

It is an arithmetic number, because the mean of its divisors is an integer number (15950887180).

Almost surely, 2^55828105123 is an apocalyptic number.

55828105123 is a deficient number, since it is larger than the sum of its proper divisors (7975443597).

55828105123 is an equidigital number, since it uses as much as digits as its factorization.

55828105123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7975443596.

The product of its (nonzero) digits is 96000, while the sum is 40.

Adding to 55828105123 its reverse (32150182855), we get a palindrome (87978287978).

The spelling of 55828105123 in words is "fifty-five billion, eight hundred twenty-eight million, one hundred five thousand, one hundred twenty-three".