1165217356583 has 4 divisors (see below), whose sum is σ = 1331676978960. Its totient is φ = 998757734208.

The previous prime is 1165217356547. The next prime is 1165217356637. The reversal of 1165217356583 is 3856537125611.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1165217356583 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 (1165217356283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83229811178 + ... + 83229811191.

It is an arithmetic number, because the mean of its divisors is an integer number (332919244740).

Almost surely, 2^{1165217356583} is an apocalyptic number.

1165217356583 is a deficient number, since it is larger than the sum of its proper divisors (166459622377).

1165217356583 is an equidigital number, since it uses as much as digits as its factorization.

1165217356583 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166459622376.

The product of its digits is 4536000, while the sum is 53.

The spelling of 1165217356583 in words is "one trillion, one hundred sixty-five billion, two hundred seventeen million, three hundred fifty-six thousand, five hundred eighty-three".