51273544543 has 8 divisors (see below), whose sum is σ = 55221415200. Its totient is φ = 47326209888.

The previous prime is 51273544481. The next prime is 51273544583. The reversal of 51273544543 is 34544537215.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51273544543 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 51273544543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51273544583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76998 + ... + 329356.

It is an arithmetic number, because the mean of its divisors is an integer number (6902676900).

Almost surely, 2^51273544543 is an apocalyptic number.

51273544543 is a deficient number, since it is larger than the sum of its proper divisors (3947870657).

51273544543 is a wasteful number, since it uses less digits than its factorization.

51273544543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268001.

The product of its digits is 1008000, while the sum is 43.

The spelling of 51273544543 in words is "fifty-one billion, two hundred seventy-three million, five hundred forty-four thousand, five hundred forty-three".