164666671223387 has 2 divisors, whose sum is σ = 164666671223388. Its totient is φ = 164666671223386.

The previous prime is 164666671223359. The next prime is 164666671223423. The reversal of 164666671223387 is 783322176666461.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 164666671223387 - 2¹⁰ = 164666671222363 is a prime.

It is a super-2 number, since 2×164666671223387² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (164666671223317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82333335611693 + 82333335611694.

It is an arithmetic number, because the mean of its divisors is an integer number (82333335611694).

Almost surely, 2^{164666671223387} is an apocalyptic number.

164666671223387 is a deficient number, since it is larger than the sum of its proper divisors (1).

164666671223387 is an equidigital number, since it uses as much as digits as its factorization.

164666671223387 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 438939648, while the sum is 68.

The spelling of 164666671223387 in words is "one hundred sixty-four trillion, six hundred sixty-six billion, six hundred seventy-one million, two hundred twenty-three thousand, three hundred eighty-seven".