164400473223 has 24 divisors (see below), whose sum is σ = 277165544448. Its totient is φ = 91944335952.

The previous prime is 164400473191. The next prime is 164400473239. The reversal of 164400473223 is 322374004461.

164400473223 is a `hidden beast` number, since 1 + 644 + 0 + 0 + 4 + 7 + 3 + 2 + 2 + 3 = 666.

It is not a de Polignac number, because 164400473223 - 2⁵ = 164400473191 is a prime.

It is a super-3 number, since 3×164400473223³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164400473243) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27758011 + ... + 27763932.

It is an arithmetic number, because the mean of its divisors is an integer number (11548564352).

Almost surely, 2^164400473223 is an apocalyptic number.

164400473223 is a deficient number, since it is larger than the sum of its proper divisors (112765071225).

164400473223 is a wasteful number, since it uses less digits than its factorization.

164400473223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55522003 (or 55522000 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 36.

Adding to 164400473223 its reverse (322374004461), we get a palindrome (486774477684).

The spelling of 164400473223 in words is "one hundred sixty-four billion, four hundred million, four hundred seventy-three thousand, two hundred twenty-three".