1121404863589 has 4 divisors (see below), whose sum is σ = 1122674858656. Its totient is φ = 1120134868524.

The previous prime is 1121404863563. The next prime is 1121404863613. The reversal of 1121404863589 is 9853684041211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1121404863589 - 2²³ = 1121396474981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121404869589) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 634996209 + ... + 634997974.

It is an arithmetic number, because the mean of its divisors is an integer number (280668714664).

Almost surely, 2^{1121404863589} is an apocalyptic number.

It is an amenable number.

1121404863589 is a deficient number, since it is larger than the sum of its proper divisors (1269995067).

1121404863589 is an equidigital number, since it uses as much as digits as its factorization.

1121404863589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1269995066.

The product of its (nonzero) digits is 1658880, while the sum is 52.

The spelling of 1121404863589 in words is "one trillion, one hundred twenty-one billion, four hundred four million, eight hundred sixty-three thousand, five hundred eighty-nine".