51286143017 has 8 divisors (see below), whose sum is σ = 52545908520. Its totient is φ = 50026800640.

The previous prime is 51286142993. The next prime is 51286143037. The reversal of 51286143017 is 71034168215.

It can be written as a sum of positive squares in 4 ways, for example, as 12880921 + 51273262096 = 3589^2 + 226436^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 51286143017 - 2²⁸ = 51017707561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51286143037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 146933 + ... + 352365.

It is an arithmetic number, because the mean of its divisors is an integer number (6568238565).

Almost surely, 2^51286143017 is an apocalyptic number.

It is an amenable number.

51286143017 is a deficient number, since it is larger than the sum of its proper divisors (1259765503).

51286143017 is a wasteful number, since it uses less digits than its factorization.

51286143017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211563.

The product of its (nonzero) digits is 40320, while the sum is 38.

The spelling of 51286143017 in words is "fifty-one billion, two hundred eighty-six million, one hundred forty-three thousand, seventeen".