55130845321872 has 480 divisors, whose sum is σ = 169096891392000. Its totient is φ = 16719014366208.

The previous prime is 55130845321859. The next prime is 55130845321873. The reversal of 55130845321872 is 27812354803155.

55130845321872 is a `hidden beast` number, since 5 + 5 + 1 + 3 + 0 + 8 + 453 + 2 + 187 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (55130845321873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1331996154 + ... + 1332037542.

It is an arithmetic number, because the mean of its divisors is an integer number (352285190400).

Almost surely, 2^{55130845321872} 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 55130845321872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84548445696000).

55130845321872 is an abundant number, since it is smaller than the sum of its proper divisors (113966046070128).

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

55130845321872 is a wasteful number, since it uses less digits than its factorization.

55130845321872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41715 (or 41706 counting only the distinct ones).

The product of its (nonzero) digits is 8064000, while the sum is 54.

The spelling of 55130845321872 in words is "fifty-five trillion, one hundred thirty billion, eight hundred forty-five million, three hundred twenty-one thousand, eight hundred seventy-two".