51364442303 has 4 divisors (see below), whose sum is σ = 51367878648. Its totient is φ = 51361005960.

The previous prime is 51364442273. The next prime is 51364442317. The reversal of 51364442303 is 30324446315.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51364442303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51364442323) 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, 1695653 + ... + 1725678.

It is an arithmetic number, because the mean of its divisors is an integer number (12841969662).

Almost surely, 2^51364442303 is an apocalyptic number.

51364442303 is a deficient number, since it is larger than the sum of its proper divisors (3436345).

51364442303 is a wasteful number, since it uses less digits than its factorization.

51364442303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3436344.

The product of its (nonzero) digits is 103680, while the sum is 35.

Adding to 51364442303 its reverse (30324446315), we get a palindrome (81688888618).

The spelling of 51364442303 in words is "fifty-one billion, three hundred sixty-four million, four hundred forty-two thousand, three hundred three".