51344365323553 has 4 divisors (see below), whose sum is σ = 51344399859588. Its totient is φ = 51344330787520.

The previous prime is 51344365323521. The next prime is 51344365323613. The reversal of 51344365323553 is 35532356344315.

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

It can be written as a sum of positive squares in 2 ways, for example, as 36026981053504 + 15317384270049 = 6002248^2 + 3913743^2 .

It is a cyclic number.

It is not a de Polignac number, because 51344365323553 - 2⁵ = 51344365323521 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 51344365323553.

It is not an unprimeable number, because it can be changed into a prime (51344365323253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14932708 + ... + 18046453.

It is an arithmetic number, because the mean of its divisors is an integer number (12836099964897).

Almost surely, 2^{51344365323553} is an apocalyptic number.

It is an amenable number.

51344365323553 is a deficient number, since it is larger than the sum of its proper divisors (34536035).

51344365323553 is a wasteful number, since it uses less digits than its factorization.

51344365323553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34536034.

The product of its digits is 29160000, while the sum is 52.

It can be divided in two parts, 513443 and 65323553, that added together give a square (65836996 = 8114²).

The spelling of 51344365323553 in words is "fifty-one trillion, three hundred forty-four billion, three hundred sixty-five million, three hundred twenty-three thousand, five hundred fifty-three".