51656758447852 has 12 divisors (see below), whose sum is σ = 91415050062840. Its totient is φ = 25538172715616.

The previous prime is 51656758447837. The next prime is 51656758447859. The reversal of 51656758447852 is 25874485765615.

It is not an unprimeable number, because it can be changed into a prime (51656758447859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72551626678 + ... + 72551627389.

It is an arithmetic number, because the mean of its divisors is an integer number (7617920838570).

Almost surely, 2^{51656758447852} is an apocalyptic number.

It is an amenable number.

51656758447852 is a deficient number, since it is larger than the sum of its proper divisors (39758291614988).

51656758447852 is a wasteful number, since it uses less digits than its factorization.

51656758447852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145103254160 (or 145103254158 counting only the distinct ones).

The product of its digits is 2257920000, while the sum is 73.

The spelling of 51656758447852 in words is "fifty-one trillion, six hundred fifty-six billion, seven hundred fifty-eight million, four hundred forty-seven thousand, eight hundred fifty-two".