51998457192 has 384 divisors, whose sum is σ = 159458544000. Its totient is φ = 13946634240.

The previous prime is 51998457179. The next prime is 51998457223. The reversal of 51998457192 is 29175489915.

It is a congruent number.

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 95 ways as a sum of consecutive naturals, for example, 584252284 + ... + 584252372.

It is an arithmetic number, because the mean of its divisors is an integer number (415256625).

Almost surely, 2^51998457192 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 51998457192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79729272000).

51998457192 is an abundant number, since it is smaller than the sum of its proper divisors (107460086808).

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

51998457192 is a wasteful number, since it uses less digits than its factorization.

51998457192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289 (or 218 counting only the distinct ones).

The product of its digits is 8164800, while the sum is 60.

The spelling of 51998457192 in words is "fifty-one billion, nine hundred ninety-eight million, four hundred fifty-seven thousand, one hundred ninety-two".