1216232662516 has 24 divisors (see below), whose sum is σ = 2166284594880. Its totient is φ = 597311376000.

The previous prime is 1216232662507. The next prime is 1216232662523. The reversal of 1216232662516 is 6152662326121.

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, 1862080 + ... + 2428951.

It is an arithmetic number, because the mean of its divisors is an integer number (90261858120).

Almost surely, 2^{1216232662516} is an apocalyptic number.

It is an amenable number.

1216232662516 is a deficient number, since it is larger than the sum of its proper divisors (950051932364).

1216232662516 is a wasteful number, since it uses less digits than its factorization.

1216232662516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4292295 (or 4292293 counting only the distinct ones).

The product of its digits is 311040, while the sum is 43.

Adding to 1216232662516 its reverse (6152662326121), we get a palindrome (7368894988637).

The spelling of 1216232662516 in words is "one trillion, two hundred sixteen billion, two hundred thirty-two million, six hundred sixty-two thousand, five hundred sixteen".