164492439512 has 8 divisors (see below), whose sum is σ = 308423324100. Its totient is φ = 82246219752.

The previous prime is 164492439511. The next prime is 164492439539. The reversal of 164492439512 is 215934294461.

164492439512 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164492439511) 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 as a sum of consecutive naturals, namely, 10280777462 + ... + 10280777477.

Almost surely, 2^164492439512 is an apocalyptic number.

It is an amenable number.

164492439512 is a deficient number, since it is larger than the sum of its proper divisors (143930884588).

164492439512 is a wasteful number, since it uses less digits than its factorization.

164492439512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20561554945 (or 20561554941 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 50.

The spelling of 164492439512 in words is "one hundred sixty-four billion, four hundred ninety-two million, four hundred thirty-nine thousand, five hundred twelve".