12438702698 has 16 divisors (see below), whose sum is σ = 20289523464. Its totient is φ = 5695303680.

The previous prime is 12438702677. The next prime is 12438702733. The reversal of 12438702698 is 89620783421.

It can be written as a sum of positive squares in 4 ways, for example, as 12266227009 + 172475689 = 110753^2 + 13133^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4942583 + ... + 4945098.

Almost surely, 2^12438702698 is an apocalyptic number.

12438702698 is a deficient number, since it is larger than the sum of its proper divisors (7850820766).

12438702698 is a wasteful number, since it uses less digits than its factorization.

12438702698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9887737.

The product of its (nonzero) digits is 1161216, while the sum is 50.

The spelling of 12438702698 in words is "twelve billion, four hundred thirty-eight million, seven hundred two thousand, six hundred ninety-eight".