51004717056720 has 480 divisors, whose sum is σ = 197227276646400. Its totient is φ = 11570946702336.

The previous prime is 51004717056697. The next prime is 51004717056731. The reversal of 51004717056720 is 2765071740015.

51004717056720 is a `hidden beast` number, since 5 + 10 + 0 + 4 + 7 + 1 + 70 + 567 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2972467501 + ... + 2972484659.

It is an arithmetic number, because the mean of its divisors is an integer number (410890159680).

Almost surely, 2^{51004717056720} 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 51004717056720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98613638323200).

51004717056720 is an abundant number, since it is smaller than the sum of its proper divisors (146222559589680).

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

51004717056720 is a wasteful number, since it uses less digits than its factorization.

51004717056720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21567 (or 21558 counting only the distinct ones).

The product of its (nonzero) digits is 411600, while the sum is 45.

Adding to 51004717056720 its reverse (2765071740015), we get a palindrome (53769788796735).

The spelling of 51004717056720 in words is "fifty-one trillion, four billion, seven hundred seventeen million, fifty-six thousand, seven hundred twenty".