12797722567 has 4 divisors (see below), whose sum is σ = 14625968656. Its totient is φ = 10969476480.

The previous prime is 12797722507. The next prime is 12797722571. The reversal of 12797722567 is 76522779721.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12797722567 - 2²⁷ = 12663504839 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12797722507) 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, 914123034 + ... + 914123047.

It is an arithmetic number, because the mean of its divisors is an integer number (3656492164).

Almost surely, 2^12797722567 is an apocalyptic number.

12797722567 is a deficient number, since it is larger than the sum of its proper divisors (1828246089).

12797722567 is an equidigital number, since it uses as much as digits as its factorization.

12797722567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1828246088.

The product of its digits is 5186160, while the sum is 55.

It can be divided in two parts, 127977 and 22567, that added together give a square (150544 = 388²).

The spelling of 12797722567 in words is "twelve billion, seven hundred ninety-seven million, seven hundred twenty-two thousand, five hundred sixty-seven".