12585395542864 has 10 divisors (see below), whose sum is σ = 24384203864330. Its totient is φ = 6292697771424.

The previous prime is 12585395542847. The next prime is 12585395542901. The reversal of 12585395542864 is 46824559358521.

It can be written as a sum of positive squares in only one way, i.e., 12122179182864 + 463216360000 = 3481692^2 + 680600^2 .

It is a super-2 number, since 2×12585395542864² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12585395542864.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 393293610699 + ... + 393293610730.

It is an arithmetic number, because the mean of its divisors is an integer number (2438420386433).

Almost surely, 2^{12585395542864} is an apocalyptic number.

It is an amenable number.

12585395542864 is a deficient number, since it is larger than the sum of its proper divisors (11798808321466).

12585395542864 is an equidigital number, since it uses as much as digits as its factorization.

12585395542864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 786587221437 (or 786587221431 counting only the distinct ones).

The product of its digits is 414720000, while the sum is 67.

The spelling of 12585395542864 in words is "twelve trillion, five hundred eighty-five billion, three hundred ninety-five million, five hundred forty-two thousand, eight hundred sixty-four".