12205577969 has 16 divisors (see below), whose sum is σ = 13733193600. Its totient is φ = 10763296896.

The previous prime is 12205577959. The next prime is 12205577983. The reversal of 12205577969 is 96977550221.

It is a cyclic number.

It is not a de Polignac number, because 12205577969 - 2⁴ = 12205577953 is a prime.

It is a super-2 number, since 2×12205577969² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12205577969.

It is not an unprimeable number, because it can be changed into a prime (12205577939) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 216662 + ... + 267120.

It is an arithmetic number, because the mean of its divisors is an integer number (858324600).

Almost surely, 2^12205577969 is an apocalyptic number.

It is an amenable number.

12205577969 is a deficient number, since it is larger than the sum of its proper divisors (1527615631).

12205577969 is a wasteful number, since it uses less digits than its factorization.

12205577969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51304.

The product of its (nonzero) digits is 2381400, while the sum is 53.

The spelling of 12205577969 in words is "twelve billion, two hundred five million, five hundred seventy-seven thousand, nine hundred sixty-nine".