55128748000 has 48 divisors (see below), whose sum is σ = 135451343664. Its totient is φ = 22051497600.

The previous prime is 55128747977. The next prime is 55128748013. The reversal of 55128748000 is 84782155.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is an unprimeable number.

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, 6887094 + ... + 6895093.

It is an arithmetic number, because the mean of its divisors is an integer number (2821902993).

Almost surely, 2^55128748000 is an apocalyptic number.

55128748000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55128748000 is an abundant number, since it is smaller than the sum of its proper divisors (80322595664).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55128748000 is a wasteful number, since it uses less digits than its factorization.

55128748000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13782212 (or 13782194 counting only the distinct ones).

The product of its (nonzero) digits is 89600, while the sum is 40.

The spelling of 55128748000 in words is "fifty-five billion, one hundred twenty-eight million, seven hundred forty-eight thousand".