51888538368 has 108 divisors (see below), whose sum is σ = 152143566120. Its totient is φ = 17002979328.

The previous prime is 51888538349. The next prime is 51888538369. The reversal of 51888538368 is 86383588815.

51888538368 is a `hidden beast` number, since 5 + 18 + 88 + 538 + 3 + 6 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (51888538369) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 54921 + ... + 326792.

Almost surely, 2^51888538368 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 51888538368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76071783060).

51888538368 is an abundant number, since it is smaller than the sum of its proper divisors (100255027752).

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

51888538368 is a wasteful number, since it uses less digits than its factorization.

51888538368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381794 (or 381777 counting only the distinct ones).

The product of its digits is 44236800, while the sum is 63.

The spelling of 51888538368 in words is "fifty-one billion, eight hundred eighty-eight million, five hundred thirty-eight thousand, three hundred sixty-eight".