12665626446 has 32 divisors (see below), whose sum is σ = 27648085248. Its totient is φ = 3836125440.

The previous prime is 12665626427. The next prime is 12665626513. The reversal of 12665626446 is 64462656621.

It is a super-2 number, since 2×12665626446² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12665626395 and 12665626404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85551 + ... + 180693.

It is an arithmetic number, because the mean of its divisors is an integer number (864002664).

Almost surely, 2^12665626446 is an apocalyptic number.

12665626446 is an abundant number, since it is smaller than the sum of its proper divisors (14982458802).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12665626446 is a wasteful number, since it uses less digits than its factorization.

12665626446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97176.

The product of its digits is 2488320, while the sum is 48.

The spelling of 12665626446 in words is "twelve billion, six hundred sixty-five million, six hundred twenty-six thousand, four hundred forty-six".