1204109980643 has 4 divisors (see below), whose sum is σ = 1204147607040. Its totient is φ = 1204072354248.

The previous prime is 1204109980613. The next prime is 1204109980649. The reversal of 1204109980643 is 3460899014021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1204109980643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1204109980649) 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 in 3 ways as a sum of consecutive naturals, for example, 18765155 + ... + 18829212.

It is an arithmetic number, because the mean of its divisors is an integer number (301036901760).

Almost surely, 2^{1204109980643} is an apocalyptic number.

1204109980643 is a deficient number, since it is larger than the sum of its proper divisors (37626397).

1204109980643 is an equidigital number, since it uses as much as digits as its factorization.

1204109980643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37626396.

The product of its (nonzero) digits is 373248, while the sum is 47.

The spelling of 1204109980643 in words is "one trillion, two hundred four billion, one hundred nine million, nine hundred eighty thousand, six hundred forty-three".