51303681543 has 16 divisors (see below), whose sum is σ = 71464341600. Its totient is φ = 32696092800.

The previous prime is 51303681509. The next prime is 51303681563. The reversal of 51303681543 is 34518630315.

51303681543 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51303681543 - 2¹⁴ = 51303665159 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51303681563) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2910508 + ... + 2928081.

It is an arithmetic number, because the mean of its divisors is an integer number (4466521350).

Almost surely, 2^51303681543 is an apocalyptic number.

51303681543 is a deficient number, since it is larger than the sum of its proper divisors (20160660057).

51303681543 is a wasteful number, since it uses less digits than its factorization.

51303681543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5838722.

The product of its (nonzero) digits is 129600, while the sum is 39.

The spelling of 51303681543 in words is "fifty-one billion, three hundred three million, six hundred eighty-one thousand, five hundred forty-three".