51444113775 has 12 divisors (see below), whose sum is σ = 85054268232. Its totient is φ = 27436860640.

The previous prime is 51444113767. The next prime is 51444113789. The reversal of 51444113775 is 57731144415.

It is a happy number.

It is not a de Polignac number, because 51444113775 - 2³ = 51444113767 is a prime.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 342960684 + ... + 342960833.

It is an arithmetic number, because the mean of its divisors is an integer number (7087855686).

Almost surely, 2^51444113775 is an apocalyptic number.

51444113775 is a deficient number, since it is larger than the sum of its proper divisors (33610154457).

51444113775 is a wasteful number, since it uses less digits than its factorization.

51444113775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 685921530 (or 685921525 counting only the distinct ones).

The product of its digits is 235200, while the sum is 42.

The spelling of 51444113775 in words is "fifty-one billion, four hundred forty-four million, one hundred thirteen thousand, seven hundred seventy-five".