12165552016 has 20 divisors (see below), whose sum is σ = 23593216624. Its totient is φ = 6076980000.

The previous prime is 12165551921. The next prime is 12165552037. The reversal of 12165552016 is 61025556121.

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, 344910 + ... + 378541.

Almost surely, 2^12165552016 is an apocalyptic number.

12165552016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12165552016 is a deficient number, since it is larger than the sum of its proper divisors (11427664608).

12165552016 is a wasteful number, since it uses less digits than its factorization.

12165552016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 724510 (or 724504 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 34.

The spelling of 12165552016 in words is "twelve billion, one hundred sixty-five million, five hundred fifty-two thousand, sixteen".