65781034216 has 64 divisors (see below), whose sum is σ = 126090561600. Its totient is φ = 32167027200.

The previous prime is 65781034213. The next prime is 65781034237. The reversal of 65781034216 is 61243018756.

It is not an unprimeable number, because it can be changed into a prime (65781034213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25988871 + ... + 25991401.

It is an arithmetic number, because the mean of its divisors is an integer number (1970165025).

Almost surely, 2^65781034216 is an apocalyptic number.

It is an amenable number.

65781034216 is a deficient number, since it is larger than the sum of its proper divisors (60309527384).

65781034216 is a wasteful number, since it uses less digits than its factorization.

65781034216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3010 (or 3006 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 43.

The spelling of 65781034216 in words is "sixty-five billion, seven hundred eighty-one million, thirty-four thousand, two hundred sixteen".