166541323210766 has 32 divisors (see below), whose sum is σ = 291001768855488. Its totient is φ = 70005892746240.

The previous prime is 166541323210747. The next prime is 166541323210817. The reversal of 166541323210766 is 667012323145661.

It is a happy number.

166541323210766 is digitally balanced in base 2, base 3 and base 8, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×166541323210766² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 275921285 + ... + 276524208.

It is an arithmetic number, because the mean of its divisors is an integer number (9093805276734).

Almost surely, 2^{166541323210766} is an apocalyptic number.

166541323210766 is a deficient number, since it is larger than the sum of its proper divisors (124460445644722).

166541323210766 is a wasteful number, since it uses less digits than its factorization.

166541323210766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 552445916.

The product of its (nonzero) digits is 6531840, while the sum is 53.

The spelling of 166541323210766 in words is "one hundred sixty-six trillion, five hundred forty-one billion, three hundred twenty-three million, two hundred ten thousand, seven hundred sixty-six".