51089476806 has 24 divisors (see below), whose sum is σ = 111426944304. Its totient is φ = 16917044400.

The previous prime is 51089476783. The next prime is 51089476811. The reversal of 51089476806 is 60867498015.

51089476806 is a `hidden beast` number, since 5 + 10 + 89 + 476 + 80 + 6 = 666.

It is a super-2 number, since 2×51089476806² (a number of 22 digits) contains 22 as substring.

It is a congruent 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 11 ways as a sum of consecutive naturals, for example, 9395641 + ... + 9401076.

It is an arithmetic number, because the mean of its divisors is an integer number (4642789346).

Almost surely, 2^51089476806 is an apocalyptic number.

51089476806 is an abundant number, since it is smaller than the sum of its proper divisors (60337467498).

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

51089476806 is a wasteful number, since it uses less digits than its factorization.

51089476806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18796876 (or 18796873 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 54.

The spelling of 51089476806 in words is "fifty-one billion, eighty-nine million, four hundred seventy-six thousand, eight hundred six".