166739023398 has 16 divisors (see below), whose sum is σ = 334806647616. Its totient is φ = 55358241000.

The previous prime is 166739023391. The next prime is 166739023417. The reversal of 166739023398 is 893320937661.

It is a happy number.

166739023398 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166739023391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55356736 + ... + 55359747.

It is an arithmetic number, because the mean of its divisors is an integer number (20925415476).

Almost surely, 2^166739023398 is an apocalyptic number.

166739023398 is an abundant number, since it is smaller than the sum of its proper divisors (168067624218).

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

166739023398 is a wasteful number, since it uses less digits than its factorization.

166739023398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110716739.

The product of its (nonzero) digits is 8817984, while the sum is 57.

The spelling of 166739023398 in words is "one hundred sixty-six billion, seven hundred thirty-nine million, twenty-three thousand, three hundred ninety-eight".