51447744066 has 32 divisors (see below), whose sum is σ = 106390283328. Its totient is φ = 16574600960.

The previous prime is 51447744043. The next prime is 51447744071. The reversal of 51447744066 is 66044774415.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 950955 + ... + 1003598.

It is an arithmetic number, because the mean of its divisors is an integer number (3324696354).

Almost surely, 2^51447744066 is an apocalyptic number.

51447744066 is an abundant number, since it is smaller than the sum of its proper divisors (54942539262).

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

51447744066 is a wasteful number, since it uses less digits than its factorization.

51447744066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1954706.

The product of its (nonzero) digits is 2257920, while the sum is 48.

The spelling of 51447744066 in words is "fifty-one billion, four hundred forty-seven million, seven hundred forty-four thousand, sixty-six".