51728359514 has 8 divisors (see below), whose sum is σ = 83561196180. Its totient is φ = 23874627456.

The previous prime is 51728359511. The next prime is 51728359523. The reversal of 51728359514 is 41595382715.

It can be written as a sum of positive squares in 2 ways, for example, as 51445951489 + 282408025 = 226817^2 + 16805^2 .

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

It is not an unprimeable number, because it can be changed into a prime (51728359511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 994776119 + ... + 994776170.

Almost surely, 2^51728359514 is an apocalyptic number.

51728359514 is a deficient number, since it is larger than the sum of its proper divisors (31832836666).

51728359514 is a wasteful number, since it uses less digits than its factorization.

51728359514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1989552304.

The product of its digits is 1512000, while the sum is 50.

The spelling of 51728359514 in words is "fifty-one billion, seven hundred twenty-eight million, three hundred fifty-nine thousand, five hundred fourteen".