166469216903 has 4 divisors (see below), whose sum is σ = 181602782088. Its totient is φ = 151335651720.

The previous prime is 166469216839. The next prime is 166469216929. The reversal of 166469216903 is 309612964661.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 166469216903 - 2⁶ = 166469216839 is a prime.

It is a super-2 number, since 2×166469216903² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166469213903) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7566782576 + ... + 7566782597.

It is an arithmetic number, because the mean of its divisors is an integer number (45400695522).

Almost surely, 2^166469216903 is an apocalyptic number.

166469216903 is a deficient number, since it is larger than the sum of its proper divisors (15133565185).

166469216903 is a wasteful number, since it uses less digits than its factorization.

166469216903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15133565184.

The product of its (nonzero) digits is 2519424, while the sum is 53.

The spelling of 166469216903 in words is "one hundred sixty-six billion, four hundred sixty-nine million, two hundred sixteen thousand, nine hundred three".