12689472026 has 64 divisors (see below), whose sum is σ = 23916404736. Its totient is φ = 4905489600.

The previous prime is 12689472007. The next prime is 12689472041. The reversal of 12689472026 is 62027498621.

It is a super-2 number, since 2×12689472026² (a number of 21 digits) contains 22 as substring.

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 31 ways as a sum of consecutive naturals, for example, 18578681 + ... + 18579363.

It is an arithmetic number, because the mean of its divisors is an integer number (373693824).

Almost surely, 2^12689472026 is an apocalyptic number.

12689472026 is a deficient number, since it is larger than the sum of its proper divisors (11226932710).

12689472026 is a wasteful number, since it uses less digits than its factorization.

12689472026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1467.

The product of its (nonzero) digits is 580608, while the sum is 47.

The spelling of 12689472026 in words is "twelve billion, six hundred eighty-nine million, four hundred seventy-two thousand, twenty-six".