164306646281 has 2 divisors, whose sum is σ = 164306646282. Its totient is φ = 164306646280.

The previous prime is 164306646269. The next prime is 164306646337. The reversal of 164306646281 is 182646603461.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 111461831881 + 52844814400 = 333859^2 + 229880^2 .

It is a cyclic number.

It is not a de Polignac number, because 164306646281 - 2²² = 164302451977 is a prime.

It is a super-2 number, since 2×164306646281² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (164306646481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82153323140 + 82153323141.

It is an arithmetic number, because the mean of its divisors is an integer number (82153323141).

Almost surely, 2^164306646281 is an apocalyptic number.

It is an amenable number.

164306646281 is a deficient number, since it is larger than the sum of its proper divisors (1).

164306646281 is an equidigital number, since it uses as much as digits as its factorization.

164306646281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 995328, while the sum is 47.

The spelling of 164306646281 in words is "one hundred sixty-four billion, three hundred six million, six hundred forty-six thousand, two hundred eighty-one".