51683730708 has 24 divisors (see below), whose sum is σ = 120642606112. Its totient is φ = 17221162464.

The previous prime is 51683730697. The next prime is 51683730713. The reversal of 51683730708 is 80703738615.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 811510 + ... + 872877.

Almost surely, 2^51683730708 is an apocalyptic number.

It is an amenable number.

51683730708 is an abundant number, since it is smaller than the sum of its proper divisors (68958875404).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51683730708 is a wasteful number, since it uses less digits than its factorization.

51683730708 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1686951 (or 1686949 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 48.

The spelling of 51683730708 in words is "fifty-one billion, six hundred eighty-three million, seven hundred thirty thousand, seven hundred eight".