51167568166 has 16 divisors (see below), whose sum is σ = 90169421328. Its totient is φ = 21468909600.

The previous prime is 51167568059. The next prime is 51167568169. The reversal of 51167568166 is 66186576115.

It is a happy number.

51167568166 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51167568169) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89453505 + ... + 89454076.

It is an arithmetic number, because the mean of its divisors is an integer number (5635588833).

Almost surely, 2^51167568166 is an apocalyptic number.

51167568166 is a deficient number, since it is larger than the sum of its proper divisors (39001853162).

51167568166 is a wasteful number, since it uses less digits than its factorization.

51167568166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178907607.

The product of its digits is 1814400, while the sum is 52.

The spelling of 51167568166 in words is "fifty-one billion, one hundred sixty-seven million, five hundred sixty-eight thousand, one hundred sixty-six".