64815338662 has 16 divisors (see below), whose sum is σ = 100586324160. Its totient is φ = 31286803968.

The previous prime is 64815338659. The next prime is 64815338663. The reversal of 64815338662 is 26683351846.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64815338663) 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 7 ways as a sum of consecutive naturals, for example, 535363 + ... + 645169.

It is an arithmetic number, because the mean of its divisors is an integer number (6286645260).

Almost surely, 2^64815338662 is an apocalyptic number.

64815338662 is a deficient number, since it is larger than the sum of its proper divisors (35770985498).

64815338662 is a wasteful number, since it uses less digits than its factorization.

64815338662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120015.

The product of its digits is 4976640, while the sum is 52.

The spelling of 64815338662 in words is "sixty-four billion, eight hundred fifteen million, three hundred thirty-eight thousand, six hundred sixty-two".