12687454562 has 16 divisors (see below), whose sum is σ = 19274787000. Its totient is φ = 6262886400.

The previous prime is 12687454561. The next prime is 12687454601. The reversal of 12687454562 is 26545478621.

12687454562 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 12157488121 + 529966441 = 110261^2 + 23021^2 .

It is a super-2 number, since 2×12687454562² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12687454562.

It is not an unprimeable number, because it can be changed into a prime (12687454561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19487 + ... + 160482.

Almost surely, 2^12687454562 is an apocalyptic number.

12687454562 is a deficient number, since it is larger than the sum of its proper divisors (6587332438).

12687454562 is a wasteful number, since it uses less digits than its factorization.

12687454562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180421.

The product of its digits is 3225600, while the sum is 50.

The spelling of 12687454562 in words is "twelve billion, six hundred eighty-seven million, four hundred fifty-four thousand, five hundred sixty-two".