12865452579 has 24 divisors (see below), whose sum is σ = 21241539072. Its totient is φ = 7350534000.

The previous prime is 12865452563. The next prime is 12865452629. The reversal of 12865452579 is 97525456821.

12865452579 is a `hidden beast` number, since 1 + 2 + 8 + 6 + 545 + 25 + 79 = 666.

It is not a de Polignac number, because 12865452579 - 2⁴ = 12865452563 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12865452079) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 541704 + ... + 564954.

It is an arithmetic number, because the mean of its divisors is an integer number (885064128).

Almost surely, 2^12865452579 is an apocalyptic number.

12865452579 is a deficient number, since it is larger than the sum of its proper divisors (8376086493).

12865452579 is a wasteful number, since it uses less digits than its factorization.

12865452579 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32047 (or 32044 counting only the distinct ones).

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

The spelling of 12865452579 in words is "twelve billion, eight hundred sixty-five million, four hundred fifty-two thousand, five hundred seventy-nine".