164256661339 has 2 divisors, whose sum is σ = 164256661340. Its totient is φ = 164256661338.

The previous prime is 164256661319. The next prime is 164256661343. The reversal of 164256661339 is 933166652461.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 164256661339 - 2¹¹ = 164256659291 is a prime.

It is not a weakly prime, because it can be changed into another prime (164256661319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82128330669 + 82128330670.

It is an arithmetic number, because the mean of its divisors is an integer number (82128330670).

Almost surely, 2^164256661339 is an apocalyptic number.

164256661339 is a deficient number, since it is larger than the sum of its proper divisors (1).

164256661339 is an equidigital number, since it uses as much as digits as its factorization.

164256661339 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4199040, while the sum is 52.

The spelling of 164256661339 in words is "one hundred sixty-four billion, two hundred fifty-six million, six hundred sixty-one thousand, three hundred thirty-nine".