1156344231689 has 4 divisors (see below), whose sum is σ = 1167793184580. Its totient is φ = 1144895278800.

The previous prime is 1156344231683. The next prime is 1156344231701. The reversal of 1156344231689 is 9861324436511.

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

It can be written as a sum of positive squares in 2 ways, for example, as 749969856064 + 406374375625 = 866008^2 + 637475^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1156344231689 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1156344231689.

It is not an unprimeable number, because it can be changed into a prime (1156344231683) 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, 5724476294 + ... + 5724476495.

It is an arithmetic number, because the mean of its divisors is an integer number (291948296145).

Almost surely, 2^{1156344231689} is an apocalyptic number.

It is an amenable number.

1156344231689 is a deficient number, since it is larger than the sum of its proper divisors (11448952891).

1156344231689 is a wasteful number, since it uses less digits than its factorization.

1156344231689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11448952890.

The product of its digits is 3732480, while the sum is 53.

The spelling of 1156344231689 in words is "one trillion, one hundred fifty-six billion, three hundred forty-four million, two hundred thirty-one thousand, six hundred eighty-nine".