164612278591499 has 2 divisors, whose sum is σ = 164612278591500. Its totient is φ = 164612278591498.

The previous prime is 164612278591451. The next prime is 164612278591513. The reversal of 164612278591499 is 994195872216461.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-164612278591499 is a prime.

It is not a weakly prime, because it can be changed into another prime (164612278591699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82306139295749 + 82306139295750.

It is an arithmetic number, because the mean of its divisors is an integer number (82306139295750).

Almost surely, 2^{164612278591499} is an apocalyptic number.

164612278591499 is a deficient number, since it is larger than the sum of its proper divisors (1).

164612278591499 is an equidigital number, since it uses as much as digits as its factorization.

164612278591499 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 470292480, while the sum is 74.

The spelling of 164612278591499 in words is "one hundred sixty-four trillion, six hundred twelve billion, two hundred seventy-eight million, five hundred ninety-one thousand, four hundred ninety-nine".