166623422361 has 8 divisors (see below), whose sum is σ = 242361341664. Its totient is φ = 100983892320.

The previous prime is 166623422341. The next prime is 166623422387. The reversal of 166623422361 is 163224326661.

It is a happy number.

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

It is not a de Polignac number, because 166623422361 - 2⁶ = 166623422297 is a prime.

It is not an unprimeable number, because it can be changed into a prime (166623422341) 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, 2524597276 + ... + 2524597341.

It is an arithmetic number, because the mean of its divisors is an integer number (30295167708).

Almost surely, 2^166623422361 is an apocalyptic number.

166623422361 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

166623422361 is a deficient number, since it is larger than the sum of its proper divisors (75737919303).

166623422361 is a wasteful number, since it uses less digits than its factorization.

166623422361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5049194631.

The product of its digits is 373248, while the sum is 42.

The spelling of 166623422361 in words is "one hundred sixty-six billion, six hundred twenty-three million, four hundred twenty-two thousand, three hundred sixty-one".