51006605164 has 12 divisors (see below), whose sum is σ = 89777523024. Its totient is φ = 25355884304.

The previous prime is 51006605161. The next prime is 51006605179. The reversal of 51006605164 is 46150660015.

It is a happy number.

51006605164 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (51006605161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36853792 + ... + 36855175.

It is an arithmetic number, because the mean of its divisors is an integer number (7481460252).

Almost surely, 2^51006605164 is an apocalyptic number.

It is an amenable number.

51006605164 is a deficient number, since it is larger than the sum of its proper divisors (38770917860).

51006605164 is a wasteful number, since it uses less digits than its factorization.

51006605164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73709144 (or 73709142 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 34.

The spelling of 51006605164 in words is "fifty-one billion, six million, six hundred five thousand, one hundred sixty-four".