166389672077058 has 64 divisors (see below), whose sum is σ = 344025680993280. Its totient is φ = 53616020689728.

The previous prime is 166389672076967. The next prime is 166389672077059. The reversal of 166389672077058 is 850770276983661.

It is not an unprimeable number, because it can be changed into a prime (166389672077059) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 43583085 + ... + 47246847.

It is an arithmetic number, because the mean of its divisors is an integer number (5375401265520).

Almost surely, 2^{166389672077058} is an apocalyptic number.

166389672077058 is an abundant number, since it is smaller than the sum of its proper divisors (177636008916222).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

166389672077058 is a wasteful number, since it uses less digits than its factorization.

166389672077058 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3665623.

The product of its (nonzero) digits is 1280240640, while the sum is 75.

The spelling of 166389672077058 in words is "one hundred sixty-six trillion, three hundred eighty-nine billion, six hundred seventy-two million, seventy-seven thousand, fifty-eight".