12845275569 has 75 divisors (see below), whose sum is σ = 22472834747. Its totient is φ = 7311596544.

The previous prime is 12845275529. The next prime is 12845275579. The reversal of 12845275569 is 96557254821.

The square root of 12845275569 is 113337.

It is a perfect power (a square), and thus also a powerful number.

12845275569 is a `hidden beast` number, since 1 + 2 + 8 + 4 + 5 + 2 + 75 + 569 = 666.

It can be written as a sum of positive squares in only one way, i.e., 12646127025 + 199148544 = 112455^2 + 14112^2 .

It is not a de Polignac number, because 12845275569 - 2¹⁷ = 12845144497 is a prime.

It is a super-2 number, since 2×12845275569² (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 (12845275519) by changing a digit.

It is a polite number, since it can be written in 74 ways as a sum of consecutive naturals, for example, 49981489 + ... + 49981745.

Almost surely, 2^12845275569 is an apocalyptic number.

12845275569 is the 113337-th square number.

12845275569 is the 56669-th centered octagonal number.

It is an amenable number.

12845275569 is a deficient number, since it is larger than the sum of its proper divisors (9627559178).

12845275569 is an frugal number, since it uses more digits than its factorization.

12845275569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 554 (or 267 counting only the distinct ones).

The product of its digits is 6048000, while the sum is 54.

The spelling of 12845275569 in words is "twelve billion, eight hundred forty-five million, two hundred seventy-five thousand, five hundred sixty-nine".