164344644063 has 10 divisors (see below), whose sum is σ = 245502493104. Its totient is φ = 109563095988.

The previous prime is 164344644041. The next prime is 164344644067. The reversal of 164344644063 is 360446443461.

164344644063 is a `hidden beast` number, since 1 + 64 + 34 + 464 + 40 + 63 = 666.

164344644063 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 164344644063 - 2⁵ = 164344644031 is a prime.

It is a super-3 number, since 3×164344644063³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164344644067) 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 9 ways as a sum of consecutive naturals, for example, 1014473031 + ... + 1014473192.

Almost surely, 2^164344644063 is an apocalyptic number.

164344644063 is a deficient number, since it is larger than the sum of its proper divisors (81157849041).

164344644063 is an equidigital number, since it uses as much as digits as its factorization.

164344644063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2028946235 (or 2028946226 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 45.

The spelling of 164344644063 in words is "one hundred sixty-four billion, three hundred forty-four million, six hundred forty-four thousand, sixty-three".