51004742473 has 8 divisors (see below), whose sum is σ = 54317192328. Its totient is φ = 47726978304.

The previous prime is 51004742389. The next prime is 51004742479. The reversal of 51004742473 is 37424740015.

51004742473 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 29101630464 + 21903112009 = 170592^2 + 147997^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-51004742473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51004742479) 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, 8668386 + ... + 8674267.

It is an arithmetic number, because the mean of its divisors is an integer number (6789649041).

Almost surely, 2^51004742473 is an apocalyptic number.

It is an amenable number.

51004742473 is a deficient number, since it is larger than the sum of its proper divisors (3312449855).

51004742473 is a wasteful number, since it uses less digits than its factorization.

51004742473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17342843.

The product of its (nonzero) digits is 94080, while the sum is 37.

The spelling of 51004742473 in words is "fifty-one billion, four million, seven hundred forty-two thousand, four hundred seventy-three".