12583812506 has 8 divisors (see below), whose sum is σ = 18980005044. Its totient is φ = 6257144160.

The previous prime is 12583812497. The next prime is 12583812589. The reversal of 12583812506 is 60521838521.

It can be written as a sum of positive squares in 2 ways, for example, as 12574258225 + 9554281 = 112135^2 + 3091^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17380595 + ... + 17381318.

Almost surely, 2^12583812506 is an apocalyptic number.

12583812506 is a deficient number, since it is larger than the sum of its proper divisors (6396192538).

12583812506 is a wasteful number, since it uses less digits than its factorization.

12583812506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34762096.

The product of its (nonzero) digits is 115200, while the sum is 41.

The spelling of 12583812506 in words is "twelve billion, five hundred eighty-three million, eight hundred twelve thousand, five hundred six".