51816683552 has 24 divisors (see below), whose sum is σ = 102019176000. Its totient is φ = 25907051584.

The previous prime is 51816683537. The next prime is 51816683561. The reversal of 51816683552 is 25538661815.

It is a self number, because there is not a number n which added to its sum of digits gives 51816683552.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1188149 + ... + 1230987.

It is an arithmetic number, because the mean of its divisors is an integer number (4250799000).

Almost surely, 2^51816683552 is an apocalyptic number.

It is an amenable number.

51816683552 is a deficient number, since it is larger than the sum of its proper divisors (50202492448).

51816683552 is a wasteful number, since it uses less digits than its factorization.

51816683552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80648 (or 80640 counting only the distinct ones).

The product of its digits is 1728000, while the sum is 50.

The spelling of 51816683552 in words is "fifty-one billion, eight hundred sixteen million, six hundred eighty-three thousand, five hundred fifty-two".