12261636662722 has 32 divisors (see below), whose sum is σ = 20536134353280. Its totient is φ = 5456673849600.

The previous prime is 12261636662689. The next prime is 12261636662767. The reversal of 12261636662722 is 22726663616221.

It is a self number, because there is not a number n which added to its sum of digits gives 12261636662722.

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, 16678654 + ... + 17398297.

It is an arithmetic number, because the mean of its divisors is an integer number (641754198540).

Almost surely, 2^{12261636662722} is an apocalyptic number.

12261636662722 is a deficient number, since it is larger than the sum of its proper divisors (8274497690558).

12261636662722 is a wasteful number, since it uses less digits than its factorization.

12261636662722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34077546.

The product of its digits is 5225472, while the sum is 52.

The spelling of 12261636662722 in words is "twelve trillion, two hundred sixty-one billion, six hundred thirty-six million, six hundred sixty-two thousand, seven hundred twenty-two".