164047809979 has 4 divisors (see below), whose sum is σ = 164770487784. Its totient is φ = 163325132176.

The previous prime is 164047809967. The next prime is 164047810013. The reversal of 164047809979 is 979908740461.

164047809979 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 164047809979 - 2²⁷ = 163913592251 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 164047809979.

It is not an unprimeable number, because it can be changed into a prime (164047804979) 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 3 ways as a sum of consecutive naturals, for example, 361338562 + ... + 361339015.

It is an arithmetic number, because the mean of its divisors is an integer number (41192621946).

Almost surely, 2^164047809979 is an apocalyptic number.

164047809979 is a deficient number, since it is larger than the sum of its proper divisors (722677805).

164047809979 is an equidigital number, since it uses as much as digits as its factorization.

164047809979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 722677804.

The product of its (nonzero) digits is 27433728, while the sum is 64.

The spelling of 164047809979 in words is "one hundred sixty-four billion, forty-seven million, eight hundred nine thousand, nine hundred seventy-nine".