12547312106 has 12 divisors (see below), whose sum is σ = 21893779458. Its totient is φ = 5377419432.

The previous prime is 12547312103. The next prime is 12547312117. The reversal of 12547312106 is 60121374521.

It can be written as a sum of positive squares in only one way, i.e., 12212239081 + 335073025 = 110509^2 + 18305^2 .

It is not an unprimeable number, because it can be changed into a prime (12547312103) 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, 64016801 + ... + 64016996.

Almost surely, 2^12547312106 is an apocalyptic number.

12547312106 is a deficient number, since it is larger than the sum of its proper divisors (9346467352).

12547312106 is a wasteful number, since it uses less digits than its factorization.

12547312106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128033813 (or 128033806 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

Adding to 12547312106 its reverse (60121374521), we get a palindrome (72668686627).

The spelling of 12547312106 in words is "twelve billion, five hundred forty-seven million, three hundred twelve thousand, one hundred six".