51885550080 has 1280 divisors, whose sum is σ = 231975152640. Its totient is φ = 10701766656.

The previous prime is 51885550039. The next prime is 51885550133. The reversal of 51885550080 is 8005558815.

It is a happy number.

51885550080 is a `hidden beast` number, since 5 + 18 + 8 + 5 + 550 + 0 + 80 = 666.

It is a tau number, because it is divible by the number of its divisors (1280).

It is a super-2 number, since 2×51885550080² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 459164104 + ... + 459164216.

It is an arithmetic number, because the mean of its divisors is an integer number (181230588).

Almost surely, 2^51885550080 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 51885550080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (115987576320).

51885550080 is an abundant number, since it is smaller than the sum of its proper divisors (180089602560).

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

51885550080 is a wasteful number, since it uses less digits than its factorization.

51885550080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238 (or 216 counting only the distinct ones).

The product of its (nonzero) digits is 320000, while the sum is 45.

The spelling of 51885550080 in words is "fifty-one billion, eight hundred eighty-five million, five hundred fifty thousand, eighty".