51651119638140 has 288 divisors, whose sum is σ = 161180020592640. Its totient is φ = 12348072000000.

The previous prime is 51651119638103. The next prime is 51651119638141. The reversal of 51651119638140 is 4183691115615.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51651119638141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 183907941 + ... + 184188579.

It is an arithmetic number, because the mean of its divisors is an integer number (559652849280).

Almost surely, 2^{51651119638140} 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 51651119638140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80590010296320).

51651119638140 is an abundant number, since it is smaller than the sum of its proper divisors (109528900954500).

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

51651119638140 is a wasteful number, since it uses less digits than its factorization.

51651119638140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281025 (or 281012 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 51.

The spelling of 51651119638140 in words is "fifty-one trillion, six hundred fifty-one billion, one hundred nineteen million, six hundred thirty-eight thousand, one hundred forty".