65767733128 has 16 divisors (see below), whose sum is σ = 130568293980. Its totient is φ = 30949521408.

The previous prime is 65767733113. The next prime is 65767733153. The reversal of 65767733128 is 82133776756.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 54801873604 + 10965859524 = 234098^2 + 104718^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 241793001 + ... + 241793272.

Almost surely, 2^65767733128 is an apocalyptic number.

65767733128 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

65767733128 is a deficient number, since it is larger than the sum of its proper divisors (64800560852).

65767733128 is a wasteful number, since it uses less digits than its factorization.

65767733128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 483586296 (or 483586292 counting only the distinct ones).

The product of its digits is 8890560, while the sum is 55.

The spelling of 65767733128 in words is "sixty-five billion, seven hundred sixty-seven million, seven hundred thirty-three thousand, one hundred twenty-eight".