12439619700128 has 24 divisors (see below), whose sum is σ = 24491648278692. Its totient is φ = 6219518550016.

The previous prime is 12439619700107. The next prime is 12439619700149. The reversal of 12439619700128 is 82100791693421.

It is an interprime number because it is at equal distance from previous prime (12439619700107) and next prime (12439619700149).

It can be written as a sum of positive squares in 2 ways, for example, as 12358684002064 + 80935698064 = 3515492^2 + 284492^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12439619700128.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8408375 + ... + 9776502.

Almost surely, 2^{12439619700128} is an apocalyptic number.

It is an amenable number.

12439619700128 is a deficient number, since it is larger than the sum of its proper divisors (12052028578564).

12439619700128 is a wasteful number, since it uses less digits than its factorization.

12439619700128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18206264 (or 18206256 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 53.

The spelling of 12439619700128 in words is "twelve trillion, four hundred thirty-nine billion, six hundred nineteen million, seven hundred thousand, one hundred twenty-eight".