1165561432343 has 12 divisors (see below), whose sum is σ = 1479116920392. Its totient is φ = 908229687120.

The previous prime is 1165561432339. The next prime is 1165561432351. The reversal of 1165561432343 is 3432341655611.

It is a happy number.

It is not a de Polignac number, because 1165561432343 - 2² = 1165561432339 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1165561432294 and 1165561432303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1165561432313) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1081225280 + ... + 1081226357.

It is an arithmetic number, because the mean of its divisors is an integer number (123259743366).

Almost surely, 2^{1165561432343} is an apocalyptic number.

1165561432343 is a deficient number, since it is larger than the sum of its proper divisors (313555488049).

1165561432343 is a wasteful number, since it uses less digits than its factorization.

1165561432343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2162451662 (or 2162451655 counting only the distinct ones).

The product of its digits is 777600, while the sum is 44.

The spelling of 1165561432343 in words is "one trillion, one hundred sixty-five billion, five hundred sixty-one million, four hundred thirty-two thousand, three hundred forty-three".