12812422769 has 4 divisors (see below), whose sum is σ = 12842150400. Its totient is φ = 12782695140.

The previous prime is 12812422723. The next prime is 12812422781. The reversal of 12812422769 is 96722421821.

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, and also an emirpimes, since its reverse is a distinct semiprime: 96722421821 = 43 ⋅2249358647.

It is a cyclic number.

It is not a de Polignac number, because 12812422769 - 2¹² = 12812418673 is a prime.

It is a super-2 number, since 2×12812422769² (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 (12812422069) 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, 14863169 + ... + 14864030.

It is an arithmetic number, because the mean of its divisors is an integer number (3210537600).

Almost surely, 2^12812422769 is an apocalyptic number.

It is an amenable number.

12812422769 is a deficient number, since it is larger than the sum of its proper divisors (29727631).

12812422769 is an equidigital number, since it uses as much as digits as its factorization.

12812422769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29727630.

The product of its digits is 193536, while the sum is 44.

The spelling of 12812422769 in words is "twelve billion, eight hundred twelve million, four hundred twenty-two thousand, seven hundred sixty-nine".