12811634949 has 8 divisors (see below), whose sum is σ = 17086103712. Its totient is φ = 8539128080.

The previous prime is 12811634947. The next prime is 12811634981. The reversal of 12811634949 is 94943611821.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 12811634949 - 2¹ = 12811634947 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12811634898 and 12811634907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12811634947) 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, 475167 + ... + 501404.

It is an arithmetic number, because the mean of its divisors is an integer number (2135762964).

Almost surely, 2^12811634949 is an apocalyptic number.

It is an amenable number.

12811634949 is a deficient number, since it is larger than the sum of its proper divisors (4274468763).

12811634949 is an equidigital number, since it uses as much as digits as its factorization.

12811634949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 980947.

The product of its digits is 373248, while the sum is 48.

The spelling of 12811634949 in words is "twelve billion, eight hundred eleven million, six hundred thirty-four thousand, nine hundred forty-nine".