12445954569 has 6 divisors (see below), whose sum is σ = 17977489946. Its totient is φ = 8297303040.

The previous prime is 12445954561. The next prime is 12445954571. The reversal of 12445954569 is 96545954421.

It is a happy number.

12445954569 is a `hidden beast` number, since 1 + 2 + 4 + 4 + 595 + 45 + 6 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 12441171600 + 4782969 = 111540^2 + 2187^2 .

It is not a de Polignac number, because 12445954569 - 2³ = 12445954561 is a prime.

It is a super-2 number, since 2×12445954569² (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 (12445954561) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 691441912 + ... + 691441929.

Almost surely, 2^12445954569 is an apocalyptic number.

It is an amenable number.

12445954569 is a deficient number, since it is larger than the sum of its proper divisors (5531535377).

12445954569 is a wasteful number, since it uses less digits than its factorization.

12445954569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1382883847 (or 1382883844 counting only the distinct ones).

The product of its digits is 7776000, while the sum is 54.

The spelling of 12445954569 in words is "twelve billion, four hundred forty-five million, nine hundred fifty-four thousand, five hundred sixty-nine".