1131111656144 has 40 divisors (see below), whose sum is σ = 2197986438912. Its totient is φ = 563890158720.

The previous prime is 1131111656123. The next prime is 1131111656159. The reversal of 1131111656144 is 4416561111311.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 24511397 + ... + 24557499.

Almost surely, 2^{1131111656144} is an apocalyptic number.

It is an amenable number.

1131111656144 is a deficient number, since it is larger than the sum of its proper divisors (1066874782768).

1131111656144 is a wasteful number, since it uses less digits than its factorization.

1131111656144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50595 (or 50589 counting only the distinct ones).

The product of its digits is 8640, while the sum is 35.

Adding to 1131111656144 its reverse (4416561111311), we get a palindrome (5547672767455).

The spelling of 1131111656144 in words is "one trillion, one hundred thirty-one billion, one hundred eleven million, six hundred fifty-six thousand, one hundred forty-four".