51354344543 has 4 divisors (see below), whose sum is σ = 53125184040. Its totient is φ = 49583505048.

The previous prime is 51354344537. The next prime is 51354344581. The reversal of 51354344543 is 34544345315.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 51354344543 - 2⁴ = 51354344527 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 51354344543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51354344533) 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, 885419705 + ... + 885419762.

It is an arithmetic number, because the mean of its divisors is an integer number (13281296010).

Almost surely, 2^51354344543 is an apocalyptic number.

51354344543 is a deficient number, since it is larger than the sum of its proper divisors (1770839497).

51354344543 is a wasteful number, since it uses less digits than its factorization.

51354344543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1770839496.

The product of its digits is 864000, while the sum is 41.

Adding to 51354344543 its reverse (34544345315), we get a palindrome (85898689858).

The spelling of 51354344543 in words is "fifty-one billion, three hundred fifty-four million, three hundred forty-four thousand, five hundred forty-three".