166938740323 has 8 divisors (see below), whose sum is σ = 180203738400. Its totient is φ = 154174308288.

The previous prime is 166938740233. The next prime is 166938740327. The reversal of 166938740323 is 323047839661.

166938740323 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 166938740323 - 2²¹ = 166936643171 is a prime.

It is a super-2 number, since 2×166938740323² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166938740327) 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, 125140818 + ... + 125142151.

It is an arithmetic number, because the mean of its divisors is an integer number (22525467300).

Almost surely, 2^166938740323 is an apocalyptic number.

166938740323 is a deficient number, since it is larger than the sum of its proper divisors (13264998077).

166938740323 is a wasteful number, since it uses less digits than its factorization.

166938740323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250283021.

The product of its (nonzero) digits is 3919104, while the sum is 52.

The spelling of 166938740323 in words is "one hundred sixty-six billion, nine hundred thirty-eight million, seven hundred forty thousand, three hundred twenty-three".