51998870482944 has 832 divisors, whose sum is σ = 184545912978432. Its totient is φ = 12711241973760.

The previous prime is 51998870482921. The next prime is 51998870483023. The reversal of 51998870482944 is 44928407889915.

It is a self number, because there is not a number n which added to its sum of digits gives 51998870482944.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1946270674 + ... + 1946297390.

Almost surely, 2^{51998870482944} 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 51998870482944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92272956489216).

51998870482944 is an abundant number, since it is smaller than the sum of its proper divisors (132547042495488).

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

51998870482944 is a wasteful number, since it uses less digits than its factorization.

51998870482944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26801 (or 26757 counting only the distinct ones).

The product of its (nonzero) digits is 1672151040, while the sum is 78.

The spelling of 51998870482944 in words is "fifty-one trillion, nine hundred ninety-eight billion, eight hundred seventy million, four hundred eighty-two thousand, nine hundred forty-four".