51885953280 has 432 divisors, whose sum is σ = 207083036160. Its totient is φ = 11748851712.

The previous prime is 51885953279. The next prime is 51885953309. The reversal of 51885953280 is 8235958815.

It is a happy number.

51885953280 is a `hidden beast` number, since 5 + 18 + 8 + 595 + 32 + 8 + 0 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8786809 + ... + 8792711.

It is an arithmetic number, because the mean of its divisors is an integer number (479358880).

Almost surely, 2^51885953280 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 51885953280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103541518080).

51885953280 is an abundant number, since it is smaller than the sum of its proper divisors (155197082880).

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

51885953280 is a wasteful number, since it uses less digits than its factorization.

51885953280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6046 (or 6029 counting only the distinct ones).

The product of its (nonzero) digits is 3456000, while the sum is 54.

The spelling of 51885953280 in words is "fifty-one billion, eight hundred eighty-five million, nine hundred fifty-three thousand, two hundred eighty".