65968200081 has 12 divisors (see below), whose sum is σ = 108899885952. Its totient is φ = 37696114296.

The previous prime is 65968200079. The next prime is 65968200091. The reversal of 65968200081 is 18000286956.

It is not a de Polignac number, because 65968200081 - 2¹ = 65968200079 is a prime.

It is a super-2 number, since 2×65968200081² (a number of 22 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (65968200031) 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 in 11 ways as a sum of consecutive naturals, for example, 523557081 + ... + 523557206.

It is an arithmetic number, because the mean of its divisors is an integer number (9074990496).

Almost surely, 2^65968200081 is an apocalyptic number.

It is an amenable number.

65968200081 is a deficient number, since it is larger than the sum of its proper divisors (42931685871).

65968200081 is a wasteful number, since it uses less digits than its factorization.

65968200081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1047114300 (or 1047114297 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The spelling of 65968200081 in words is "sixty-five billion, nine hundred sixty-eight million, two hundred thousand, eighty-one".