64314721965316 has 9 divisors (see below), whose sum is σ = 112550791508071. Its totient is φ = 32157352963012.

The previous prime is 64314721965313. The next prime is 64314721965359. The reversal of 64314721965316 is 61356912741346.

It is a happy number.

The square root of 64314721965316 is 8019646.

It is a perfect power (a square), and thus also a powerful number.

It is a super-2 number, since 2×64314721965316² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64314721965313) 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 2 ways as a sum of consecutive naturals, for example, 14034381 + ... + 18044203.

Almost surely, 2^{64314721965316} is an apocalyptic number.

64314721965316 is the 8019646-th square number.

It is an amenable number.

64314721965316 is a deficient number, since it is larger than the sum of its proper divisors (48236069542755).

64314721965316 is an frugal number, since it uses more digits than its factorization.

64314721965316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8019650 (or 4009825 counting only the distinct ones).

The product of its digits is 19595520, while the sum is 58.

The spelling of 64314721965316 in words is "sixty-four trillion, three hundred fourteen billion, seven hundred twenty-one million, nine hundred sixty-five thousand, three hundred sixteen".