164556204139 has 2 divisors, whose sum is σ = 164556204140. Its totient is φ = 164556204138.

The previous prime is 164556204097. The next prime is 164556204187. The reversal of 164556204139 is 931402655461.

It is a weak prime.

It is an emirp because it is prime and its reverse (931402655461) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 164556204139 - 2⁷ = 164556204011 is a prime.

It is not a weakly prime, because it can be changed into another prime (164556207139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82278102069 + 82278102070.

It is an arithmetic number, because the mean of its divisors is an integer number (82278102070).

Almost surely, 2^164556204139 is an apocalyptic number.

164556204139 is a deficient number, since it is larger than the sum of its proper divisors (1).

164556204139 is an equidigital number, since it uses as much as digits as its factorization.

164556204139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 777600, while the sum is 46.

The spelling of 164556204139 in words is "one hundred sixty-four billion, five hundred fifty-six million, two hundred four thousand, one hundred thirty-nine".