12882921797 has 4 divisors (see below), whose sum is σ = 12883700076. Its totient is φ = 12882143520.

The previous prime is 12882921791. The next prime is 12882921829. The reversal of 12882921797 is 79712928821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 79712928821 = 17 ⋅4688995813.

It can be written as a sum of positive squares in 2 ways, for example, as 10061293636 + 2821628161 = 100306^2 + 53119^2 .

It is a cyclic number.

It is not a de Polignac number, because 12882921797 - 2²⁸ = 12614486341 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 (12882921791) 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, 363758 + ... + 397599.

It is an arithmetic number, because the mean of its divisors is an integer number (3220925019).

Almost surely, 2^12882921797 is an apocalyptic number.

It is an amenable number.

12882921797 is a deficient number, since it is larger than the sum of its proper divisors (778279).

12882921797 is an equidigital number, since it uses as much as digits as its factorization.

12882921797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 778278.

The product of its digits is 2032128, while the sum is 56.

The spelling of 12882921797 in words is "twelve billion, eight hundred eighty-two million, nine hundred twenty-one thousand, seven hundred ninety-seven".