1965816216216 has 32 divisors (see below), whose sum is σ = 5460600601200. Its totient is φ = 655272072000.

The previous prime is 1965816216151. The next prime is 1965816216241. The reversal of 1965816216216 is 6126126185691.

It is a happy number.

1965816216216 is a `hidden beast` number, since 1 + 9 + 6 + 5 + 8 + 1 + 6 + 2 + 1 + 621 + 6 = 666.

It is a super-2 number, since 2×1965816216216² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4550500285 + ... + 4550500716.

Almost surely, 2^{1965816216216} is an apocalyptic number.

It is an amenable number.

1965816216216 is an abundant number, since it is smaller than the sum of its proper divisors (3494784384984).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1965816216216 is a wasteful number, since it uses less digits than its factorization.

1965816216216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9101001016 (or 9101001006 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 54.

The spelling of 1965816216216 in words is "one trillion, nine hundred sixty-five billion, eight hundred sixteen million, two hundred sixteen thousand, two hundred sixteen".