55204230514128 has 160 divisors (see below), whose sum is σ = 147709859392512. Its totient is φ = 17747530752000.

The previous prime is 55204230514091. The next prime is 55204230514129. The reversal of 55204230514128 is 82141503240255.

It is a self number, because there is not a number n which added to its sum of digits gives 55204230514128.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55204230514129) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2543845678 + ... + 2543867378.

Almost surely, 2^{55204230514128} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55204230514128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73854929696256).

55204230514128 is an abundant number, since it is smaller than the sum of its proper divisors (92505628878384).

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

55204230514128 is a wasteful number, since it uses less digits than its factorization.

55204230514128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27453 (or 27447 counting only the distinct ones).

The product of its (nonzero) digits is 384000, while the sum is 42.

The spelling of 55204230514128 in words is "fifty-five trillion, two hundred four billion, two hundred thirty million, five hundred fourteen thousand, one hundred twenty-eight".