51884489944 has 192 divisors, whose sum is σ = 119976007680. Its totient is φ = 20586182400.

The previous prime is 51884489939. The next prime is 51884489977. The reversal of 51884489944 is 44998448815.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 141374449 + ... + 141374815.

It is an arithmetic number, because the mean of its divisors is an integer number (624875040).

Almost surely, 2^51884489944 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 51884489944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59988003840).

51884489944 is an abundant number, since it is smaller than the sum of its proper divisors (68091517736).

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

51884489944 is a wasteful number, since it uses less digits than its factorization.

51884489944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550 (or 515 counting only the distinct ones).

The product of its digits is 53084160, while the sum is 64.

The spelling of 51884489944 in words is "fifty-one billion, eight hundred eighty-four million, four hundred eighty-nine thousand, nine hundred forty-four".