65683881897 has 16 divisors (see below), whose sum is σ = 88697917440. Its totient is φ = 43229686032.

The previous prime is 65683881881. The next prime is 65683881947. The reversal of 65683881897 is 79818838656.

It is not a de Polignac number, because 65683881897 - 2⁴ = 65683881881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65683881877) 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, 3300258 + ... + 3320100.

It is an arithmetic number, because the mean of its divisors is an integer number (5543619840).

Almost surely, 2^65683881897 is an apocalyptic number.

It is an amenable number.

65683881897 is a deficient number, since it is larger than the sum of its proper divisors (23014035543).

65683881897 is a wasteful number, since it uses less digits than its factorization.

65683881897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33892.

The product of its digits is 139345920, while the sum is 69.

The spelling of 65683881897 in words is "sixty-five billion, six hundred eighty-three million, eight hundred eighty-one thousand, eight hundred ninety-seven".