1216016216 has 8 divisors (see below), whose sum is σ = 2280030420. Its totient is φ = 608008104.

The previous prime is 1216016213. The next prime is 1216016227. The reversal of 1216016216 is 6126106121.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1216016213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76001006 + ... + 76001021.

Almost surely, 2^1216016216 is an apocalyptic number.

It is an amenable number.

1216016216 is a deficient number, since it is larger than the sum of its proper divisors (1064014204).

1216016216 is a wasteful number, since it uses less digits than its factorization.

1216016216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152002033 (or 152002029 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 1216016216 is about 34871.4240603965. The cubic root of 1216016216 is about 1067.3654040731.

The spelling of 1216016216 in words is "one billion, two hundred sixteen million, sixteen thousand, two hundred sixteen".