51140640760 has 256 divisors, whose sum is σ = 136791244800. Its totient is φ = 17015961600.

The previous prime is 51140640743. The next prime is 51140640763. The reversal of 51140640760 is 6704604115.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51140640763) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 22839721 + ... + 22841959.

It is an arithmetic number, because the mean of its divisors is an integer number (534340800).

Almost surely, 2^51140640760 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 51140640760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68395622400).

51140640760 is an abundant number, since it is smaller than the sum of its proper divisors (85650604040).

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

51140640760 is a wasteful number, since it uses less digits than its factorization.

51140640760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2382 (or 2378 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 34.

The spelling of 51140640760 in words is "fifty-one billion, one hundred forty million, six hundred forty thousand, seven hundred sixty".