51856822266 has 8 divisors (see below), whose sum is σ = 103713644544. Its totient is φ = 17285607420.

The previous prime is 51856822249. The next prime is 51856822337. The reversal of 51856822266 is 66222865815.

It is a sphenic number, since it is the product of 3 distinct primes.

51856822266 is an admirable number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4321401850 + ... + 4321401861.

It is an arithmetic number, because the mean of its divisors is an integer number (12964205568).

Almost surely, 2^51856822266 is an apocalyptic number.

51856822266 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

51856822266 is a wasteful number, since it uses less digits than its factorization.

51856822266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8642803716.

The product of its digits is 2764800, while the sum is 51.

The spelling of 51856822266 in words is "fifty-one billion, eight hundred fifty-six million, eight hundred twenty-two thousand, two hundred sixty-six".