51943920850 has 24 divisors (see below), whose sum is σ = 99732331008. Its totient is φ = 20107323600.

The previous prime is 51943920841. The next prime is 51943920851. The reversal of 51943920850 is 5802934915.

It is a self number, because there is not a number n which added to its sum of digits gives 51943920850.

It is not an unprimeable number, because it can be changed into a prime (51943920851) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16754554 + ... + 16757653.

It is an arithmetic number, because the mean of its divisors is an integer number (4155513792).

Almost surely, 2^51943920850 is an apocalyptic number.

51943920850 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51943920850 is a deficient number, since it is larger than the sum of its proper divisors (47788410158).

51943920850 is a wasteful number, since it uses less digits than its factorization.

51943920850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33512250 (or 33512245 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 46.

The spelling of 51943920850 in words is "fifty-one billion, nine hundred forty-three million, nine hundred twenty thousand, eight hundred fifty".