166966207377 has 8 divisors (see below), whose sum is σ = 224115715200. Its totient is φ = 110563752240.

The previous prime is 166966207367. The next prime is 166966207381. The reversal of 166966207377 is 773702669661.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 166966207377 - 2⁶ = 166966207313 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 166966207377.

It is not an unprimeable number, because it can be changed into a prime (166966207307) 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, 186762649 + ... + 186763542.

It is an arithmetic number, because the mean of its divisors is an integer number (28014464400).

Almost surely, 2^166966207377 is an apocalyptic number.

It is an amenable number.

166966207377 is a deficient number, since it is larger than the sum of its proper divisors (57149507823).

166966207377 is a wasteful number, since it uses less digits than its factorization.

166966207377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373526343.

The product of its (nonzero) digits is 24004512, while the sum is 60.

The spelling of 166966207377 in words is "one hundred sixty-six billion, nine hundred sixty-six million, two hundred seven thousand, three hundred seventy-seven".