166372518134 has 4 divisors (see below), whose sum is σ = 249558777204. Its totient is φ = 83186259066.

The previous prime is 166372518119. The next prime is 166372518139. The reversal of 166372518134 is 431815273661.

166372518134 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 431815273661 = 241 ⋅1791764621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166372518139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41593129532 + ... + 41593129535.

It is an arithmetic number, because the mean of its divisors is an integer number (62389694301).

Almost surely, 2^166372518134 is an apocalyptic number.

166372518134 is a deficient number, since it is larger than the sum of its proper divisors (83186259070).

166372518134 is an equidigital number, since it uses as much as digits as its factorization.

166372518134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83186259069.

The product of its digits is 725760, while the sum is 47.

The spelling of 166372518134 in words is "one hundred sixty-six billion, three hundred seventy-two million, five hundred eighteen thousand, one hundred thirty-four".