12266641371782 has 64 divisors (see below), whose sum is σ = 22869675924480. Its totient is φ = 4816816730496.

The previous prime is 12266641371781. The next prime is 12266641371821. The reversal of 12266641371782 is 28717314666221.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12266641371781) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2087993 + ... + 5375220.

It is an arithmetic number, because the mean of its divisors is an integer number (357338686320).

Almost surely, 2^{12266641371782} is an apocalyptic number.

12266641371782 is a deficient number, since it is larger than the sum of its proper divisors (10603034552698).

12266641371782 is a wasteful number, since it uses less digits than its factorization.

12266641371782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7463445.

The product of its digits is 8128512, while the sum is 56.

The spelling of 12266641371782 in words is "twelve trillion, two hundred sixty-six billion, six hundred forty-one million, three hundred seventy-one thousand, seven hundred eighty-two".