51017420343 has 8 divisors (see below), whose sum is σ = 68032435456. Its totient is φ = 34007009400.

The previous prime is 51017420171. The next prime is 51017420357. The reversal of 51017420343 is 34302471015.

It is a happy number.

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

It is not a de Polignac number, because 51017420343 - 2²⁸ = 50748984887 is a prime.

It is a super-3 number, since 3×51017420343³ (a number of 33 digits) contains 333 as substring.

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 51017420343.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51017020343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1125103 + ... + 1169568.

It is an arithmetic number, because the mean of its divisors is an integer number (8504054432).

Almost surely, 2^51017420343 is an apocalyptic number.

51017420343 is a deficient number, since it is larger than the sum of its proper divisors (17015015113).

51017420343 is a wasteful number, since it uses less digits than its factorization.

51017420343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2302085.

The product of its (nonzero) digits is 10080, while the sum is 30.

Adding to 51017420343 its reverse (34302471015), we get a palindrome (85319891358).

The spelling of 51017420343 in words is "fifty-one billion, seventeen million, four hundred twenty thousand, three hundred forty-three".