12688473446 has 16 divisors (see below), whose sum is σ = 20774665728. Its totient is φ = 5764235400.

The previous prime is 12688473431. The next prime is 12688473451. The reversal of 12688473446 is 64437488621.

It is a super-2 number, since 2×12688473446² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 122510 + ... + 200961.

It is an arithmetic number, because the mean of its divisors is an integer number (1298416608).

Almost surely, 2^12688473446 is an apocalyptic number.

12688473446 is a deficient number, since it is larger than the sum of its proper divisors (8086192282).

12688473446 is a wasteful number, since it uses less digits than its factorization.

12688473446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325267.

The product of its digits is 6193152, while the sum is 53.

The spelling of 12688473446 in words is "twelve billion, six hundred eighty-eight million, four hundred seventy-three thousand, four hundred forty-six".