12666501562 has 16 divisors (see below), whose sum is σ = 22321387872. Its totient is φ = 5314615920.

The previous prime is 12666501541. The next prime is 12666501571. The reversal of 12666501562 is 26510566621.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22143948 + ... + 22144519.

It is an arithmetic number, because the mean of its divisors is an integer number (1395086742).

Almost surely, 2^12666501562 is an apocalyptic number.

12666501562 is a deficient number, since it is larger than the sum of its proper divisors (9654886310).

12666501562 is a wasteful number, since it uses less digits than its factorization.

12666501562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44288493.

The product of its (nonzero) digits is 129600, while the sum is 40.

The spelling of 12666501562 in words is "twelve billion, six hundred sixty-six million, five hundred one thousand, five hundred sixty-two".