12568177369 has 4 divisors (see below), whose sum is σ = 13710738960. Its totient is φ = 11425615780.

The previous prime is 12568177343. The next prime is 12568177397. The reversal of 12568177369 is 96377186521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12568177369 - 2⁷ = 12568177241 is a prime.

It is a super-2 number, since 2×12568177369² (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 (12568177319) 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, 571280779 + ... + 571280800.

It is an arithmetic number, because the mean of its divisors is an integer number (3427684740).

Almost surely, 2^12568177369 is an apocalyptic number.

It is an amenable number.

12568177369 is a deficient number, since it is larger than the sum of its proper divisors (1142561591).

12568177369 is a wasteful number, since it uses less digits than its factorization.

12568177369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1142561590.

The product of its digits is 3810240, while the sum is 55.

The spelling of 12568177369 in words is "twelve billion, five hundred sixty-eight million, one hundred seventy-seven thousand, three hundred sixty-nine".