1204136403728 has 20 divisors (see below), whose sum is σ = 2333042790288. Its totient is φ = 602060844960.

The previous prime is 1204136403727. The next prime is 1204136403803. The reversal of 1204136403728 is 8273046314021.

It is not an unprimeable number, because it can be changed into a prime (1204136403727) by changing a digit.

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, 1038443 + ... + 1867253.

Almost surely, 2^{1204136403728} is an apocalyptic number.

It is an amenable number.

1204136403728 is a deficient number, since it is larger than the sum of its proper divisors (1128906386560).

1204136403728 is an equidigital number, since it uses as much as digits as its factorization.

1204136403728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 919622 (or 919616 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 41.

The spelling of 1204136403728 in words is "one trillion, two hundred four billion, one hundred thirty-six million, four hundred three thousand, seven hundred twenty-eight".