12806031077 has 6 divisors (see below), whose sum is σ = 14896811718. Its totient is φ = 10976598024.

The previous prime is 12806031071. The next prime is 12806031101. The reversal of 12806031077 is 77013060821.

It can be written as a sum of positive squares in only one way, i.e., 10512195841 + 2293835236 = 102529^2 + 47894^2 .

It is not a de Polignac number, because 12806031077 - 2⁶ = 12806031013 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 (12806031071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 130673738 + ... + 130673835.

It is an arithmetic number, because the mean of its divisors is an integer number (2482801953).

Almost surely, 2^12806031077 is an apocalyptic number.

It is an amenable number.

12806031077 is a deficient number, since it is larger than the sum of its proper divisors (2090780641).

12806031077 is an equidigital number, since it uses as much as digits as its factorization.

12806031077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261347587 (or 261347580 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 35.

Adding to 12806031077 its reverse (77013060821), we get a palindrome (89819091898).

The spelling of 12806031077 in words is "twelve billion, eight hundred six million, thirty-one thousand, seventy-seven".