51105143323 has 4 divisors (see below), whose sum is σ = 55036308208. Its totient is φ = 47173978440.

The previous prime is 51105143267. The next prime is 51105143329. The reversal of 51105143323 is 32334150115.

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 51105143323 - 2²⁹ = 50568272411 is a prime.

It is a super-2 number, since 2×51105143323² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51105143291 and 51105143300.

It is not an unprimeable number, because it can be changed into a prime (51105143329) 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 3 ways as a sum of consecutive naturals, for example, 1965582423 + ... + 1965582448.

It is an arithmetic number, because the mean of its divisors is an integer number (13759077052).

Almost surely, 2^51105143323 is an apocalyptic number.

51105143323 is a deficient number, since it is larger than the sum of its proper divisors (3931164885).

51105143323 is a wasteful number, since it uses less digits than its factorization.

51105143323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3931164884.

The product of its (nonzero) digits is 5400, while the sum is 28.

Adding to 51105143323 its reverse (32334150115), we get a palindrome (83439293438).

The spelling of 51105143323 in words is "fifty-one billion, one hundred five million, one hundred forty-three thousand, three hundred twenty-three".