164645696992668 has 48 divisors (see below), whose sum is σ = 385108376378880. Its totient is φ = 54748374574464.

The previous prime is 164645696992643. The next prime is 164645696992681. The reversal of 164645696992668 is 866299696546461.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18689055 + ... + 26049417.

It is an arithmetic number, because the mean of its divisors is an integer number (8023091174560).

Almost surely, 2^{164645696992668} is an apocalyptic number.

It is an amenable number.

164645696992668 is an abundant number, since it is smaller than the sum of its proper divisors (220462679386212).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

164645696992668 is a wasteful number, since it uses less digits than its factorization.

164645696992668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7364906 (or 7364904 counting only the distinct ones).

The product of its digits is 43535646720, while the sum is 87.

The spelling of 164645696992668 in words is "one hundred sixty-four trillion, six hundred forty-five billion, six hundred ninety-six million, nine hundred ninety-two thousand, six hundred sixty-eight".