12754691669 has 2 divisors, whose sum is σ = 12754691670. Its totient is φ = 12754691668.

The previous prime is 12754691657. The next prime is 12754691683. The reversal of 12754691669 is 96619645721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12119147569 + 635544100 = 110087^2 + 25210^2 .

It is a cyclic number.

It is not a de Polignac number, because 12754691669 - 2¹⁶ = 12754626133 is a prime.

It is a super-2 number, since 2×12754691669² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12754691629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6377345834 + 6377345835.

It is an arithmetic number, because the mean of its divisors is an integer number (6377345835).

Almost surely, 2^12754691669 is an apocalyptic number.

It is an amenable number.

12754691669 is a deficient number, since it is larger than the sum of its proper divisors (1).

12754691669 is an equidigital number, since it uses as much as digits as its factorization.

12754691669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4898880, while the sum is 56.

The spelling of 12754691669 in words is "twelve billion, seven hundred fifty-four million, six hundred ninety-one thousand, six hundred sixty-nine".