12811630969 has 4 divisors (see below), whose sum is σ = 12890230096. Its totient is φ = 12733031844.

The previous prime is 12811630963. The next prime is 12811630987. The reversal of 12811630969 is 96903611821.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12811630969 - 2¹⁵ = 12811598201 is a prime.

It is a super-2 number, since 2×12811630969² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12811630963) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39299319 + ... + 39299644.

It is an arithmetic number, because the mean of its divisors is an integer number (3222557524).

Almost surely, 2^12811630969 is an apocalyptic number.

It is an amenable number.

12811630969 is a deficient number, since it is larger than the sum of its proper divisors (78599127).

12811630969 is an equidigital number, since it uses as much as digits as its factorization.

12811630969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78599126.

The product of its (nonzero) digits is 139968, while the sum is 46.

The spelling of 12811630969 in words is "twelve billion, eight hundred eleven million, six hundred thirty thousand, nine hundred sixty-nine".