51839905360 has 40 divisors (see below), whose sum is σ = 121295502216. Its totient is φ = 20603880960.

The previous prime is 51839905333. The next prime is 51839905361. The reversal of 51839905360 is 6350993815.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 8051831824 + 43788073536 = 89732^2 + 209256^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51839905361) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2051131 + ... + 2076250.

Almost surely, 2^51839905360 is an apocalyptic number.

It is an amenable number.

51839905360 is an abundant number, since it is smaller than the sum of its proper divisors (69455596856).

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

51839905360 is a wasteful number, since it uses less digits than its factorization.

51839905360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4127551 (or 4127545 counting only the distinct ones).

The product of its (nonzero) digits is 874800, while the sum is 49.

The spelling of 51839905360 in words is "fifty-one billion, eight hundred thirty-nine million, nine hundred five thousand, three hundred sixty".