164422503281 has 2 divisors, whose sum is σ = 164422503282. Its totient is φ = 164422503280.

The previous prime is 164422503257. The next prime is 164422503331. The reversal of 164422503281 is 182305224461.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 164341862881 + 80640400 = 405391^2 + 8980^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-164422503281 is a prime.

It is a super-3 number, since 3×164422503281³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (164422523281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82211251640 + 82211251641.

It is an arithmetic number, because the mean of its divisors is an integer number (82211251641).

Almost surely, 2^164422503281 is an apocalyptic number.

It is an amenable number.

164422503281 is a deficient number, since it is larger than the sum of its proper divisors (1).

164422503281 is an equidigital number, since it uses as much as digits as its factorization.

164422503281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 92160, while the sum is 38.

The spelling of 164422503281 in words is "one hundred sixty-four billion, four hundred twenty-two million, five hundred three thousand, two hundred eighty-one".