51340442033 has 8 divisors (see below), whose sum is σ = 51406107840. Its totient is φ = 51274809040.

The previous prime is 51340442009. The next prime is 51340442077. The reversal of 51340442033 is 33024404315.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51340442033 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51340441987 and 51340442005.

It is not an unprimeable number, because it can be changed into a prime (51340442003) 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 7 ways as a sum of consecutive naturals, for example, 4775378 + ... + 4786116.

It is an arithmetic number, because the mean of its divisors is an integer number (6425763480).

Almost surely, 2^51340442033 is an apocalyptic number.

It is an amenable number.

51340442033 is a deficient number, since it is larger than the sum of its proper divisors (65665807).

51340442033 is a wasteful number, since it uses less digits than its factorization.

51340442033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16407.

The product of its (nonzero) digits is 17280, while the sum is 29.

Adding to 51340442033 its reverse (33024404315), we get a palindrome (84364846348).

The spelling of 51340442033 in words is "fifty-one billion, three hundred forty million, four hundred forty-two thousand, thirty-three".