164695265279 has 2 divisors, whose sum is σ = 164695265280. Its totient is φ = 164695265278.

The previous prime is 164695265263. The next prime is 164695265297. The reversal of 164695265279 is 972562596461.

Together with next prime (164695265297) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 164695265279 - 2⁴ = 164695265263 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164695265219) 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 as a sum of consecutive naturals, namely, 82347632639 + 82347632640.

It is an arithmetic number, because the mean of its divisors is an integer number (82347632640).

Almost surely, 2^164695265279 is an apocalyptic number.

164695265279 is a deficient number, since it is larger than the sum of its proper divisors (1).

164695265279 is an equidigital number, since it uses as much as digits as its factorization.

164695265279 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48988800, while the sum is 62.

The spelling of 164695265279 in words is "one hundred sixty-four billion, six hundred ninety-five million, two hundred sixty-five thousand, two hundred seventy-nine".