1131808856743 has 4 divisors (see below), whose sum is σ = 1191377743960. Its totient is φ = 1072239969528.

The previous prime is 1131808856713. The next prime is 1131808856791. The reversal of 1131808856743 is 3476588081311.

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

It is a cyclic number.

It is not a de Polignac number, because 1131808856743 - 2¹³ = 1131808848551 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 (1131808856713) 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 3 ways as a sum of consecutive naturals, for example, 29784443580 + ... + 29784443617.

It is an arithmetic number, because the mean of its divisors is an integer number (297844435990).

Almost surely, 2^{1131808856743} is an apocalyptic number.

1131808856743 is a deficient number, since it is larger than the sum of its proper divisors (59568887217).

1131808856743 is an equidigital number, since it uses as much as digits as its factorization.

1131808856743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59568887216.

The product of its (nonzero) digits is 3870720, while the sum is 55.

The spelling of 1131808856743 in words is "one trillion, one hundred thirty-one billion, eight hundred eight million, eight hundred fifty-six thousand, seven hundred forty-three".