51343424243 has 16 divisors (see below), whose sum is σ = 51961694400. Its totient is φ = 50729817600.

The previous prime is 51343424233. The next prime is 51343424257. The reversal of 51343424243 is 34242434315.

It is a cyclic number.

It is not a de Polignac number, because 51343424243 - 2⁶ = 51343424179 is a prime.

It is a super-2 number, since 2×51343424243² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51343424213) 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 15 ways as a sum of consecutive naturals, for example, 29832623 + ... + 29834343.

It is an arithmetic number, because the mean of its divisors is an integer number (3247605900).

Almost surely, 2^51343424243 is an apocalyptic number.

51343424243 is a deficient number, since it is larger than the sum of its proper divisors (618270157).

51343424243 is a wasteful number, since it uses less digits than its factorization.

51343424243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2878.

The product of its digits is 138240, while the sum is 35.

Adding to 51343424243 its reverse (34242434315), we get a palindrome (85585858558).

The spelling of 51343424243 in words is "fifty-one billion, three hundred forty-three million, four hundred twenty-four thousand, two hundred forty-three".