1154355243412 has 12 divisors (see below), whose sum is σ = 2308710486880. Its totient is φ = 494723675736.

The previous prime is 1154355243403. The next prime is 1154355243469. The reversal of 1154355243412 is 2143425534511.

1154355243412 is an admirable number.

It is a congruent number.

It is an unprimeable number.

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, 20613486462 + ... + 20613486517.

Almost surely, 2^{1154355243412} is an apocalyptic number.

It is an amenable number.

1154355243412 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1154355243412 is a wasteful number, since it uses less digits than its factorization.

1154355243412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41226972990 (or 41226972988 counting only the distinct ones).

The product of its digits is 288000, while the sum is 40.

The spelling of 1154355243412 in words is "one trillion, one hundred fifty-four billion, three hundred fifty-five million, two hundred forty-three thousand, four hundred twelve".