12468902569 has 4 divisors (see below), whose sum is σ = 13202367444. Its totient is φ = 11735437696.

The previous prime is 12468902557. The next prime is 12468902587. The reversal of 12468902569 is 96520986421.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4867155225 + 7601747344 = 69765^2 + 87188^2 .

It is a cyclic number.

It is not a de Polignac number, because 12468902569 - 2³³ = 3878967977 is a prime.

It is a super-2 number, since 2×12468902569² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12468902599) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 366732412 + ... + 366732445.

It is an arithmetic number, because the mean of its divisors is an integer number (3300591861).

Almost surely, 2^12468902569 is an apocalyptic number.

It is an amenable number.

12468902569 is a deficient number, since it is larger than the sum of its proper divisors (733464875).

12468902569 is an equidigital number, since it uses as much as digits as its factorization.

12468902569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 733464874.

The product of its (nonzero) digits is 1866240, while the sum is 52.

The spelling of 12468902569 in words is "twelve billion, four hundred sixty-eight million, nine hundred two thousand, five hundred sixty-nine".