65336998771 has 16 divisors (see below), whose sum is σ = 78290231040. Its totient is φ = 53824525920.

The previous prime is 65336998717. The next prime is 65336998787. The reversal of 65336998771 is 17789963356.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-65336998771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65336998171) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 6791220 + ... + 6800833.

It is an arithmetic number, because the mean of its divisors is an integer number (4893139440).

Almost surely, 2^65336998771 is an apocalyptic number.

65336998771 is a deficient number, since it is larger than the sum of its proper divisors (12953232269).

65336998771 is a wasteful number, since it uses less digits than its factorization.

65336998771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13592106.

The product of its digits is 51438240, while the sum is 64.

The spelling of 65336998771 in words is "sixty-five billion, three hundred thirty-six million, nine hundred ninety-eight thousand, seven hundred seventy-one".