166390004163 has 8 divisors (see below), whose sum is σ = 221867219728. Its totient is φ = 110919729024.

The previous prime is 166390004119. The next prime is 166390004167. The reversal of 166390004163 is 361400093661.

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

It is not a de Polignac number, because 166390004163 - 2¹⁴ = 166389987779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166390004167) 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, 1678906 + ... + 1775247.

It is an arithmetic number, because the mean of its divisors is an integer number (27733402466).

Almost surely, 2^166390004163 is an apocalyptic number.

166390004163 is a deficient number, since it is larger than the sum of its proper divisors (55477215565).

166390004163 is a wasteful number, since it uses less digits than its factorization.

166390004163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3470213.

The product of its (nonzero) digits is 69984, while the sum is 39.

The spelling of 166390004163 in words is "one hundred sixty-six billion, three hundred ninety million, four thousand, one hundred sixty-three".