65788608005 has 4 divisors (see below), whose sum is σ = 78946329612. Its totient is φ = 52630886400.

The previous prime is 65788608001. The next prime is 65788608007. The reversal of 65788608005 is 50080688756.

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

It can be written as a sum of positive squares in 2 ways, for example, as 19185297121 + 46603310884 = 138511^2 + 215878^2 .

It is not a de Polignac number, because 65788608005 - 2² = 65788608001 is a prime.

It is a super-3 number, since 3×65788608005³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65788608001) by changing a digit.

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, 6578860796 + ... + 6578860805.

It is an arithmetic number, because the mean of its divisors is an integer number (19736582403).

Almost surely, 2^65788608005 is an apocalyptic number.

It is an amenable number.

65788608005 is a deficient number, since it is larger than the sum of its proper divisors (13157721607).

65788608005 is a wasteful number, since it uses less digits than its factorization.

65788608005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13157721606.

The product of its (nonzero) digits is 3225600, while the sum is 53.

The spelling of 65788608005 in words is "sixty-five billion, seven hundred eighty-eight million, six hundred eight thousand, five".