164404664026023 has 4 divisors (see below), whose sum is σ = 219206218701368. Its totient is φ = 109603109350680.

The previous prime is 164404664025929. The next prime is 164404664026049. The reversal of 164404664026023 is 320620466404461.

It is a happy number.

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

It is not a de Polignac number, because 164404664026023 - 2³⁴ = 164387484156839 is a prime.

It is a super-3 number, since 3×164404664026023³ (a number of 44 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164404664026223) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 27400777337668 + ... + 27400777337673.

It is an arithmetic number, because the mean of its divisors is an integer number (54801554675342).

Almost surely, 2^{164404664026023} is an apocalyptic number.

164404664026023 is a deficient number, since it is larger than the sum of its proper divisors (54801554675345).

164404664026023 is an equidigital number, since it uses as much as digits as its factorization.

164404664026023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54801554675344.

The product of its (nonzero) digits is 3981312, while the sum is 48.

The spelling of 164404664026023 in words is "one hundred sixty-four trillion, four hundred four billion, six hundred sixty-four million, twenty-six thousand, twenty-three".