201601543667 has 2 divisors, whose sum is σ = 201601543668. Its totient is φ = 201601543666.

The previous prime is 201601543609. The next prime is 201601543673. The reversal of 201601543667 is 766345106102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 201601543667 - 2⁶ = 201601543603 is a prime.

It is not a weakly prime, because it can be changed into another prime (201601543067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100800771833 + 100800771834.

It is an arithmetic number, because the mean of its divisors is an integer number (100800771834).

Almost surely, 2^201601543667 is an apocalyptic number.

201601543667 is a deficient number, since it is larger than the sum of its proper divisors (1).

201601543667 is an equidigital number, since it uses as much as digits as its factorization.

201601543667 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 181440, while the sum is 41.

Adding to 201601543667 its reverse (766345106102), we get a palindrome (967946649769).

The spelling of 201601543667 in words is "two hundred one billion, six hundred one million, five hundred forty-three thousand, six hundred sixty-seven".