51055573488912 has 320 divisors, whose sum is σ = 148813621032960. Its totient is φ = 16757545545216.

The previous prime is 51055573488901. The next prime is 51055573488917. The reversal of 51055573488912 is 21988437555015.

51055573488912 is a `hidden beast` number, since 5 + 1 + 0 + 5 + 5 + 573 + 48 + 8 + 9 + 12 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 51055573488912.

It is not an unprimeable number, because it can be changed into a prime (51055573488917) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9161234158 + ... + 9161239730.

It is an arithmetic number, because the mean of its divisors is an integer number (465042565728).

Almost surely, 2^{51055573488912} 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 51055573488912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74406810516480).

51055573488912 is an abundant number, since it is smaller than the sum of its proper divisors (97758047544048).

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

51055573488912 is a wasteful number, since it uses less digits than its factorization.

51055573488912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6827 (or 6815 counting only the distinct ones).

The product of its (nonzero) digits is 60480000, while the sum is 63.

The spelling of 51055573488912 in words is "fifty-one trillion, fifty-five billion, five hundred seventy-three million, four hundred eighty-eight thousand, nine hundred twelve".