1204357866789 has 16 divisors (see below), whose sum is σ = 2002049441280. Its totient is φ = 625640450160.

The previous prime is 1204357866773. The next prime is 1204357866791. The reversal of 1204357866789 is 9876687534021.

It is not a de Polignac number, because 1204357866789 - 2⁴ = 1204357866773 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1204357866709) 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 15 ways as a sum of consecutive naturals, for example, 2606834979 + ... + 2606835440.

It is an arithmetic number, because the mean of its divisors is an integer number (125128090080).

It is a 1-persistent number, because it is pandigital, but 2⋅1204357866789 = 2408715733578 is not.

Almost surely, 2^{1204357866789} is an apocalyptic number.

It is an amenable number.

1204357866789 is a deficient number, since it is larger than the sum of its proper divisors (797691574491).

1204357866789 is a wasteful number, since it uses less digits than its factorization.

1204357866789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5213670440.

The product of its (nonzero) digits is 121927680, while the sum is 66.

The spelling of 1204357866789 in words is "one trillion, two hundred four billion, three hundred fifty-seven million, eight hundred sixty-six thousand, seven hundred eighty-nine".