51544101240 has 384 divisors, whose sum is σ = 177683950080. Its totient is φ = 12933043200.

The previous prime is 51544101209. The next prime is 51544101277. The reversal of 51544101240 is 4210144515.

51544101240 is a `hidden beast` number, since 5 + 1 + 5 + 4 + 410 + 1 + 240 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 244284735 + ... + 244284945.

It is an arithmetic number, because the mean of its divisors is an integer number (462718620).

Almost surely, 2^51544101240 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 51544101240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88841975040).

51544101240 is an abundant number, since it is smaller than the sum of its proper divisors (126139848840).

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

51544101240 is a wasteful number, since it uses less digits than its factorization.

51544101240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 595 (or 588 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

Adding to 51544101240 its reverse (4210144515), we get a palindrome (55754245755).

The spelling of 51544101240 in words is "fifty-one billion, five hundred forty-four million, one hundred one thousand, two hundred forty".