164296552781 has 2 divisors, whose sum is σ = 164296552782. Its totient is φ = 164296552780.

The previous prime is 164296552729. The next prime is 164296552813. The reversal of 164296552781 is 187255692461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 116711056900 + 47585495881 = 341630^2 + 218141^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-164296552781 is a prime.

It is a super-2 number, since 2×164296552781² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164296554781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82148276390 + 82148276391.

It is an arithmetic number, because the mean of its divisors is an integer number (82148276391).

Almost surely, 2^164296552781 is an apocalyptic number.

It is an amenable number.

164296552781 is a deficient number, since it is larger than the sum of its proper divisors (1).

164296552781 is an equidigital number, since it uses as much as digits as its factorization.

164296552781 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7257600, while the sum is 56.

The spelling of 164296552781 in words is "one hundred sixty-four billion, two hundred ninety-six million, five hundred fifty-two thousand, seven hundred eighty-one".