12038664569 has 2 divisors, whose sum is σ = 12038664570. Its totient is φ = 12038664568.

The previous prime is 12038664541. The next prime is 12038664611. The reversal of 12038664569 is 96546683021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11092302400 + 946362169 = 105320^2 + 30763^2 .

It is a cyclic number.

It is not a de Polignac number, because 12038664569 - 2¹⁶ = 12038599033 is a prime.

It is a super-2 number, since 2×12038664569² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12038664769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6019332284 + 6019332285.

It is an arithmetic number, because the mean of its divisors is an integer number (6019332285).

Almost surely, 2^12038664569 is an apocalyptic number.

It is an amenable number.

12038664569 is a deficient number, since it is larger than the sum of its proper divisors (1).

12038664569 is an equidigital number, since it uses as much as digits as its factorization.

12038664569 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1866240, while the sum is 50.

The spelling of 12038664569 in words is "twelve billion, thirty-eight million, six hundred sixty-four thousand, five hundred sixty-nine".