164706123511 has 4 divisors (see below), whose sum is σ = 165232341472. Its totient is φ = 164179905552.

The previous prime is 164706123497. The next prime is 164706123641. The reversal of 164706123511 is 115321607461.

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 164706123511 - 2¹⁷ = 164705992439 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164776123511) 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, 263108511 + ... + 263109136.

It is an arithmetic number, because the mean of its divisors is an integer number (41308085368).

Almost surely, 2^164706123511 is an apocalyptic number.

164706123511 is a deficient number, since it is larger than the sum of its proper divisors (526217961).

164706123511 is an equidigital number, since it uses as much as digits as its factorization.

164706123511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526217960.

The product of its (nonzero) digits is 30240, while the sum is 37.

The spelling of 164706123511 in words is "one hundred sixty-four billion, seven hundred six million, one hundred twenty-three thousand, five hundred eleven".