51866717000 has 64 divisors (see below), whose sum is σ = 138706439040. Its totient is φ = 17782872000.

The previous prime is 51866716999. The next prime is 51866717017. The reversal of 51866717000 is 71766815.

51866717000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3697766 + ... + 3711765.

It is an arithmetic number, because the mean of its divisors is an integer number (2167288110).

Almost surely, 2^51866717000 is an apocalyptic number.

51866717000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51866717000 is an abundant number, since it is smaller than the sum of its proper divisors (86839722040).

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

51866717000 is a wasteful number, since it uses less digits than its factorization.

51866717000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7409559 (or 7409545 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 41.

The spelling of 51866717000 in words is "fifty-one billion, eight hundred sixty-six million, seven hundred seventeen thousand".