51422443111 has 8 divisors (see below), whose sum is σ = 55380225824. Its totient is φ = 47464976160.

The previous prime is 51422443091. The next prime is 51422443123. The reversal of 51422443111 is 11134422415.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 51422443111 - 2³¹ = 49274959463 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 51422443111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51422443811) 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, 342766 + ... + 469396.

It is an arithmetic number, because the mean of its divisors is an integer number (6922528228).

Almost surely, 2^51422443111 is an apocalyptic number.

51422443111 is a deficient number, since it is larger than the sum of its proper divisors (3957782713).

51422443111 is a wasteful number, since it uses less digits than its factorization.

51422443111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157881.

The product of its digits is 3840, while the sum is 28.

Adding to 51422443111 its reverse (11134422415), we get a palindrome (62556865526).

The spelling of 51422443111 in words is "fifty-one billion, four hundred twenty-two million, four hundred forty-three thousand, one hundred eleven".