12820512849 has 8 divisors (see below), whose sum is σ = 17095226400. Its totient is φ = 8546403936.

The previous prime is 12820512797. The next prime is 12820512851. The reversal of 12820512849 is 94821502821.

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

It is not a de Polignac number, because 12820512849 - 2²⁷ = 12686295121 is a prime.

It is a super-2 number, since 2×12820512849² (a number of 21 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 12820512849.

It is not an unprimeable number, because it can be changed into a prime (12820512899) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99124 + ... + 188325.

It is an arithmetic number, because the mean of its divisors is an integer number (2136903300).

Almost surely, 2^12820512849 is an apocalyptic number.

It is an amenable number.

12820512849 is a deficient number, since it is larger than the sum of its proper divisors (4274713551).

12820512849 is a wasteful number, since it uses less digits than its factorization.

12820512849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302319.

The product of its (nonzero) digits is 92160, while the sum is 42.

The spelling of 12820512849 in words is "twelve billion, eight hundred twenty million, five hundred twelve thousand, eight hundred forty-nine".