12881283794 has 4 divisors (see below), whose sum is σ = 19321925694. Its totient is φ = 6440641896.

The previous prime is 12881283743. The next prime is 12881283797. The reversal of 12881283794 is 49738218821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 49738218821 = 82781 ⋅600841.

It can be written as a sum of positive squares in only one way, i.e., 12625443769 + 255840025 = 112363^2 + 15995^2 .

It is not an unprimeable number, because it can be changed into a prime (12881283797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3220320947 + ... + 3220320950.

Almost surely, 2^12881283794 is an apocalyptic number.

12881283794 is a deficient number, since it is larger than the sum of its proper divisors (6440641900).

12881283794 is an equidigital number, since it uses as much as digits as its factorization.

12881283794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6440641899.

The product of its digits is 1548288, while the sum is 53.

The spelling of 12881283794 in words is "twelve billion, eight hundred eighty-one million, two hundred eighty-three thousand, seven hundred ninety-four".