51751302720 has 448 divisors, whose sum is σ = 191040837120. Its totient is φ = 11762860032.

The previous prime is 51751302703. The next prime is 51751302731. The reversal of 51751302720 is 2720315715.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8321052 + ... + 8327268.

It is an arithmetic number, because the mean of its divisors is an integer number (426430440).

Almost surely, 2^51751302720 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 51751302720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95520418560).

51751302720 is an abundant number, since it is smaller than the sum of its proper divisors (139289534400).

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

51751302720 is a wasteful number, since it uses less digits than its factorization.

51751302720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6302 (or 6292 counting only the distinct ones).

The product of its (nonzero) digits is 14700, while the sum is 33.

The spelling of 51751302720 in words is "fifty-one billion, seven hundred fifty-one million, three hundred two thousand, seven hundred twenty".