13333666669 has 2 divisors, whose sum is σ = 13333666670. Its totient is φ = 13333666668.

The previous prime is 13333666607. The next prime is 13333666691. The reversal of 13333666669 is 96666633331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11069144100 + 2264522569 = 105210^2 + 47587^2 .

It is an emirp because it is prime and its reverse (96666633331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13333666669 - 2²³ = 13325278061 is a prime.

It is a super-2 number, since 2×13333666669² (a number of 21 digits) contains 22 as substring.

It is a plaindrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13333676669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6666833334 + 6666833335.

It is an arithmetic number, because the mean of its divisors is an integer number (6666833335).

Almost surely, 2^13333666669 is an apocalyptic number.

13333666669 is the 66668-th hex number.

It is an amenable number.

13333666669 is a deficient number, since it is larger than the sum of its proper divisors (1).

13333666669 is an equidigital number, since it uses as much as digits as its factorization.

13333666669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5668704, while the sum is 52.

The spelling of 13333666669 in words is "thirteen billion, three hundred thirty-three million, six hundred sixty-six thousand, six hundred sixty-nine".