14188533661 has 2 divisors, whose sum is σ = 14188533662. Its totient is φ = 14188533660.

The previous prime is 14188533647. The next prime is 14188533769. The reversal of 14188533661 is 16633588141.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9434431161 + 4754102500 = 97131^2 + 68950^2 .

It is a cyclic number.

It is not a de Polignac number, because 14188533661 - 2¹³ = 14188525469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14188530661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7094266830 + 7094266831.

It is an arithmetic number, because the mean of its divisors is an integer number (7094266831).

Almost surely, 2^14188533661 is an apocalyptic number.

It is an amenable number.

14188533661 is a deficient number, since it is larger than the sum of its proper divisors (1).

14188533661 is an equidigital number, since it uses as much as digits as its factorization.

14188533661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 414720, while the sum is 46.

The spelling of 14188533661 in words is "fourteen billion, one hundred eighty-eight million, five hundred thirty-three thousand, six hundred sixty-one".