65474664811 has 4 divisors (see below), whose sum is σ = 68321389392. Its totient is φ = 62627940232.

The previous prime is 65474664803. The next prime is 65474664817. The reversal of 65474664811 is 11846647456.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 65474664811 - 2³ = 65474664803 is a prime.

It is a super-2 number, since 2×65474664811² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65474664817) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1423362256 + ... + 1423362301.

It is an arithmetic number, because the mean of its divisors is an integer number (17080347348).

Almost surely, 2^65474664811 is an apocalyptic number.

65474664811 is a deficient number, since it is larger than the sum of its proper divisors (2846724581).

65474664811 is a wasteful number, since it uses less digits than its factorization.

65474664811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2846724580.

The product of its digits is 3870720, while the sum is 52.

The spelling of 65474664811 in words is "sixty-five billion, four hundred seventy-four million, six hundred sixty-four thousand, eight hundred eleven".