12881482634 has 4 divisors (see below), whose sum is σ = 19322223954. Its totient is φ = 6440741316.

The previous prime is 12881482597. The next prime is 12881482639. The reversal of 12881482634 is 43628418821.

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

It can be written as a sum of positive squares in only one way, i.e., 6872907409 + 6008575225 = 82903^2 + 77515^2 .

It is not an unprimeable number, because it can be changed into a prime (12881482639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3220370657 + ... + 3220370660.

Almost surely, 2^12881482634 is an apocalyptic number.

12881482634 is a deficient number, since it is larger than the sum of its proper divisors (6440741320).

12881482634 is an equidigital number, since it uses as much as digits as its factorization.

12881482634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6440741319.

The product of its digits is 589824, while the sum is 47.

The spelling of 12881482634 in words is "twelve billion, eight hundred eighty-one million, four hundred eighty-two thousand, six hundred thirty-four".