12702796538 has 4 divisors (see below), whose sum is σ = 19054194810. Its totient is φ = 6351398268.

The previous prime is 12702796537. The next prime is 12702796567. The reversal of 12702796538 is 83569720721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 83569720721 = 14221 ⋅5876501.

It can be written as a sum of positive squares in only one way, i.e., 7507702609 + 5195093929 = 86647^2 + 72077^2 .

It is a super-2 number, since 2×12702796538² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12702796537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3175699133 + ... + 3175699136.

Almost surely, 2^12702796538 is an apocalyptic number.

12702796538 is a deficient number, since it is larger than the sum of its proper divisors (6351398272).

12702796538 is an equidigital number, since it uses as much as digits as its factorization.

12702796538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6351398271.

The product of its (nonzero) digits is 1270080, while the sum is 50.

The spelling of 12702796538 in words is "twelve billion, seven hundred two million, seven hundred ninety-six thousand, five hundred thirty-eight".