51304242063 has 4 divisors (see below), whose sum is σ = 68405656088. Its totient is φ = 34202828040.

The previous prime is 51304242061. The next prime is 51304242071. The reversal of 51304242063 is 36024240315.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 51304242063 - 2¹ = 51304242061 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51304242063.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51304242061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8550707008 + ... + 8550707013.

It is an arithmetic number, because the mean of its divisors is an integer number (17101414022).

Almost surely, 2^51304242063 is an apocalyptic number.

51304242063 is a deficient number, since it is larger than the sum of its proper divisors (17101414025).

51304242063 is a wasteful number, since it uses less digits than its factorization.

51304242063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17101414024.

The product of its (nonzero) digits is 17280, while the sum is 30.

Adding to 51304242063 its reverse (36024240315), we get a palindrome (87328482378).

The spelling of 51304242063 in words is "fifty-one billion, three hundred four million, two hundred forty-two thousand, sixty-three".