51422130400 has 288 divisors, whose sum is σ = 143198834688. Its totient is φ = 17916518400.

The previous prime is 51422130367. The next prime is 51422130427. The reversal of 51422130400 is 403122415.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9694149 + ... + 9699451.

It is an arithmetic number, because the mean of its divisors is an integer number (497218176).

Almost surely, 2^51422130400 is an apocalyptic number.

51422130400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51422130400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71599417344).

51422130400 is an abundant number, since it is smaller than the sum of its proper divisors (91776704288).

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

51422130400 is a wasteful number, since it uses less digits than its factorization.

51422130400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5394 (or 5381 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

Adding to 51422130400 its reverse (403122415), we get a palindrome (51825252815).

The spelling of 51422130400 in words is "fifty-one billion, four hundred twenty-two million, one hundred thirty thousand, four hundred".