263115221612 has 12 divisors (see below), whose sum is σ = 480471274416. Its totient is φ = 125837714640.

The previous prime is 263115221587. The next prime is 263115221627. The reversal of 263115221612 is 216122511362.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1429973939 + ... + 1429974122.

It is an arithmetic number, because the mean of its divisors is an integer number (40039272868).

Almost surely, 2^263115221612 is an apocalyptic number.

It is an amenable number.

263115221612 is a deficient number, since it is larger than the sum of its proper divisors (217356052804).

263115221612 is a wasteful number, since it uses less digits than its factorization.

263115221612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2859948088 (or 2859948086 counting only the distinct ones).

The product of its digits is 8640, while the sum is 32.

Adding to 263115221612 its reverse (216122511362), we get a palindrome (479237732974).

The spelling of 263115221612 in words is "two hundred sixty-three billion, one hundred fifteen million, two hundred twenty-one thousand, six hundred twelve".