164065985067 has 4 divisors (see below), whose sum is σ = 218754646760. Its totient is φ = 109377323376.

The previous prime is 164065985063. The next prime is 164065985107. The reversal of 164065985067 is 760589560461.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 164065985067 - 2² = 164065985063 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 164065984998 and 164065985016.

It is not an unprimeable number, because it can be changed into a prime (164065985063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27344330842 + ... + 27344330847.

It is an arithmetic number, because the mean of its divisors is an integer number (54688661690).

Almost surely, 2^164065985067 is an apocalyptic number.

164065985067 is a deficient number, since it is larger than the sum of its proper divisors (54688661693).

164065985067 is an equidigital number, since it uses as much as digits as its factorization.

164065985067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54688661692.

The product of its (nonzero) digits is 10886400, while the sum is 57.

The spelling of 164065985067 in words is "one hundred sixty-four billion, sixty-five million, nine hundred eighty-five thousand, sixty-seven".