64641838156708 has 24 divisors (see below), whose sum is σ = 113940117331040. Its totient is φ = 32087531427840.

The previous prime is 64641838156703. The next prime is 64641838156723. The reversal of 64641838156708 is 80765183814646.

64641838156708 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (64641838156703) 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 7 ways as a sum of consecutive naturals, for example, 19379263 + ... + 22468633.

Almost surely, 2^{64641838156708} is an apocalyptic number.

It is an amenable number.

64641838156708 is a deficient number, since it is larger than the sum of its proper divisors (49298279174332).

64641838156708 is a wasteful number, since it uses less digits than its factorization.

64641838156708 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3127147 (or 3127145 counting only the distinct ones).

The product of its (nonzero) digits is 185794560, while the sum is 67.

The spelling of 64641838156708 in words is "sixty-four trillion, six hundred forty-one billion, eight hundred thirty-eight million, one hundred fifty-six thousand, seven hundred eight".