164513320260109 has 4 divisors (see below), whose sum is σ = 164923577917020. Its totient is φ = 164103062603200.

The previous prime is 164513320260017. The next prime is 164513320260127. The reversal of 164513320260109 is 901062023315461.

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

It can be written as a sum of positive squares in 2 ways, for example, as 74821150606084 + 89692169654025 = 8649922^2 + 9470595^2 .

It is a cyclic number.

It is not a de Polignac number, because 164513320260109 - 2²³ = 164513311871501 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 (164513320260139) 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, 205128827854 + ... + 205128828655.

It is an arithmetic number, because the mean of its divisors is an integer number (41230894479255).

Almost surely, 2^{164513320260109} is an apocalyptic number.

It is an amenable number.

164513320260109 is a deficient number, since it is larger than the sum of its proper divisors (410257656911).

164513320260109 is an equidigital number, since it uses as much as digits as its factorization.

164513320260109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410257656910.

The product of its (nonzero) digits is 233280, while the sum is 43.

The spelling of 164513320260109 in words is "one hundred sixty-four trillion, five hundred thirteen billion, three hundred twenty million, two hundred sixty thousand, one hundred nine".