12266784938 has 4 divisors (see below), whose sum is σ = 18400177410. Its totient is φ = 6133392468.

The previous prime is 12266784869. The next prime is 12266784941. The reversal of 12266784938 is 83948766221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 83948766221 = 50929 ⋅1648349.

It can be written as a sum of positive squares in only one way, i.e., 7833489049 + 4433295889 = 88507^2 + 66583^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3066696233 + ... + 3066696236.

Almost surely, 2^12266784938 is an apocalyptic number.

12266784938 is a deficient number, since it is larger than the sum of its proper divisors (6133392472).

12266784938 is an equidigital number, since it uses as much as digits as its factorization.

12266784938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6133392471.

The product of its digits is 6967296, while the sum is 56.

The spelling of 12266784938 in words is "twelve billion, two hundred sixty-six million, seven hundred eighty-four thousand, nine hundred thirty-eight".