12638282841994 has 4 divisors (see below), whose sum is σ = 18957424262994. Its totient is φ = 6319141420996.

The previous prime is 12638282841971. The next prime is 12638282842037. The reversal of 12638282841994 is 49914828283621.

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., 12560907074769 + 77375767225 = 3544137^2 + 278165^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3159570710497 + ... + 3159570710500.

Almost surely, 2^{12638282841994} is an apocalyptic number.

12638282841994 is a deficient number, since it is larger than the sum of its proper divisors (6319141421000).

12638282841994 is an equidigital number, since it uses as much as digits as its factorization.

12638282841994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6319141420999.

The product of its digits is 95551488, while the sum is 67.

The spelling of 12638282841994 in words is "twelve trillion, six hundred thirty-eight billion, two hundred eighty-two million, eight hundred forty-one thousand, nine hundred ninety-four".