12837959986 has 4 divisors (see below), whose sum is σ = 19256939982. Its totient is φ = 6418979992.

The previous prime is 12837959983. The next prime is 12837959993. The reversal of 12837959986 is 68995973821.

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., 11787227761 + 1050732225 = 108569^2 + 32415^2 .

It is a Smith number, since the sum of its digits (67) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (12837959983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3209489995 + ... + 3209489998.

Almost surely, 2^12837959986 is an apocalyptic number.

12837959986 is a deficient number, since it is larger than the sum of its proper divisors (6418979996).

12837959986 is an equidigital number, since it uses as much as digits as its factorization.

12837959986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6418979995.

The product of its digits is 58786560, while the sum is 67.

The spelling of 12837959986 in words is "twelve billion, eight hundred thirty-seven million, nine hundred fifty-nine thousand, nine hundred eighty-six".