1165623413212 has 24 divisors (see below), whose sum is σ = 2069966731392. Its totient is φ = 574215423600.

The previous prime is 1165623413161. The next prime is 1165623413249. The reversal of 1165623413212 is 2123143265611.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 962614 + ... + 1804957.

It is an arithmetic number, because the mean of its divisors is an integer number (86248613808).

Almost surely, 2^{1165623413212} is an apocalyptic number.

It is an amenable number.

1165623413212 is a deficient number, since it is larger than the sum of its proper divisors (904343318180).

1165623413212 is a wasteful number, since it uses less digits than its factorization.

1165623413212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2769129 (or 2769127 counting only the distinct ones).

The product of its digits is 51840, while the sum is 37.

Adding to 1165623413212 its reverse (2123143265611), we get a palindrome (3288766678823).

The spelling of 1165623413212 in words is "one trillion, one hundred sixty-five billion, six hundred twenty-three million, four hundred thirteen thousand, two hundred twelve".