166590757666 has 16 divisors (see below), whose sum is σ = 263195740800. Its totient is φ = 78864100848.

The previous prime is 166590757657. The next prime is 166590757667. The reversal of 166590757666 is 666757095661.

It is a junction number, because it is equal to n+sod(n) for n = 166590757598 and 166590757607.

It is not an unprimeable number, because it can be changed into a prime (166590757667) 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, 1249930 + ... + 1376773.

It is an arithmetic number, because the mean of its divisors is an integer number (16449733800).

Almost surely, 2^166590757666 is an apocalyptic number.

166590757666 is a deficient number, since it is larger than the sum of its proper divisors (96604983134).

166590757666 is a wasteful number, since it uses less digits than its factorization.

166590757666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2628393.

The product of its (nonzero) digits is 85730400, while the sum is 64.

The spelling of 166590757666 in words is "one hundred sixty-six billion, five hundred ninety million, seven hundred fifty-seven thousand, six hundred sixty-six".