51512856933 has 16 divisors (see below), whose sum is σ = 69142701056. Its totient is φ = 34112594880.

The previous prime is 51512856929. The next prime is 51512857013. The reversal of 51512856933 is 33965821515.

It is a happy number.

It is not a de Polignac number, because 51512856933 - 2² = 51512856929 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51512856533) 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, 1686588 + ... + 1716858.

It is an arithmetic number, because the mean of its divisors is an integer number (4321418816).

Almost surely, 2^51512856933 is an apocalyptic number.

It is an amenable number.

51512856933 is a deficient number, since it is larger than the sum of its proper divisors (17629844123).

51512856933 is a wasteful number, since it uses less digits than its factorization.

51512856933 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34044.

The product of its digits is 972000, while the sum is 48.

The spelling of 51512856933 in words is "fifty-one billion, five hundred twelve million, eight hundred fifty-six thousand, nine hundred thirty-three".