164173554326563 has 4 divisors (see below), whose sum is σ = 164173787413200. Its totient is φ = 164173321239928.

The previous prime is 164173554326557. The next prime is 164173554326567. The reversal of 164173554326563 is 365623455371461.

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 164173554326563 - 2¹⁷ = 164173554195491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164173554326567) 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, 115483588 + ... + 116896561.

It is an arithmetic number, because the mean of its divisors is an integer number (41043446853300).

Almost surely, 2^{164173554326563} is an apocalyptic number.

164173554326563 is a deficient number, since it is larger than the sum of its proper divisors (233086637).

164173554326563 is an equidigital number, since it uses as much as digits as its factorization.

164173554326563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233086636.

The product of its digits is 163296000, while the sum is 61.

The spelling of 164173554326563 in words is "one hundred sixty-four trillion, one hundred seventy-three billion, five hundred fifty-four million, three hundred twenty-six thousand, five hundred sixty-three".