12882156305 has 4 divisors (see below), whose sum is σ = 15458587572. Its totient is φ = 10305725040.

The previous prime is 12882156223. The next prime is 12882156311. The reversal of 12882156305 is 50365128821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50365128821 = 7 ⋅7195018403.

It can be written as a sum of positive squares in 2 ways, for example, as 2039515921 + 10842640384 = 45161^2 + 104128^2 .

It is not a de Polignac number, because 12882156305 - 2¹⁸ = 12881894161 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1288215626 + ... + 1288215635.

It is an arithmetic number, because the mean of its divisors is an integer number (3864646893).

Almost surely, 2^12882156305 is an apocalyptic number.

It is an amenable number.

12882156305 is a deficient number, since it is larger than the sum of its proper divisors (2576431267).

12882156305 is an equidigital number, since it uses as much as digits as its factorization.

12882156305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2576431266.

The product of its (nonzero) digits is 115200, while the sum is 41.

The spelling of 12882156305 in words is "twelve billion, eight hundred eighty-two million, one hundred fifty-six thousand, three hundred five".