66566166050 has 24 divisors (see below), whose sum is σ = 125204235300. Its totient is φ = 26327290880.

The previous prime is 66566166047. The next prime is 66566166109. The reversal of 66566166050 is 5066166566.

It can be written as a sum of positive squares in 6 ways, for example, as 2480737249 + 64085428801 = 49807^2 + 253151^2 .

It is a junction number, because it is equal to n+sod(n) for n = 66566165986 and 66566166004.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7474895 + ... + 7483794.

Almost surely, 2^66566166050 is an apocalyptic number.

66566166050 is a deficient number, since it is larger than the sum of its proper divisors (58638069250).

66566166050 is a wasteful number, since it uses less digits than its factorization.

66566166050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14958790 (or 14958785 counting only the distinct ones).

The product of its (nonzero) digits is 1166400, while the sum is 47.

It can be divided in two parts, 6656616 and 6050, that added together give a palindrome (6662666).

The spelling of 66566166050 in words is "sixty-six billion, five hundred sixty-six million, one hundred sixty-six thousand, fifty".