12496379866 has 4 divisors (see below), whose sum is σ = 18744569802. Its totient is φ = 6248189932.

The previous prime is 12496379851. The next prime is 12496379867. The reversal of 12496379866 is 66897369421.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 10692594025 + 1803785841 = 103405^2 + 42471^2 .

It is not an unprimeable number, because it can be changed into a prime (12496379867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3124094965 + ... + 3124094968.

Almost surely, 2^12496379866 is an apocalyptic number.

12496379866 is a deficient number, since it is larger than the sum of its proper divisors (6248189936).

12496379866 is an equidigital number, since it uses as much as digits as its factorization.

12496379866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6248189935.

The product of its digits is 23514624, while the sum is 61.

The spelling of 12496379866 in words is "twelve billion, four hundred ninety-six million, three hundred seventy-nine thousand, eight hundred sixty-six".