64705067250916 has 9 divisors (see below), whose sum is σ = 113233895842921. Its totient is φ = 32352525581512.

The previous prime is 64705067250883. The next prime is 64705067250977. The reversal of 64705067250916 is 61905276050746.

The square root of 64705067250916 is 8043946.

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

64705067250916 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 43485188148900 + 21219879102016 = 6594330^2 + 4606504^2 .

It is a Duffinian number.

It is an unprimeable number.

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 2 ways as a sum of consecutive naturals, for example, 14076906 + ... + 18098878.

Almost surely, 2^{64705067250916} is an apocalyptic number.

64705067250916 is the 8043946-th square number.

It is an amenable number.

64705067250916 is a deficient number, since it is larger than the sum of its proper divisors (48528828592005).

64705067250916 is an frugal number, since it uses more digits than its factorization.

64705067250916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8043950 (or 4021975 counting only the distinct ones).

The product of its (nonzero) digits is 19051200, while the sum is 58.

The spelling of 64705067250916 in words is "sixty-four trillion, seven hundred five billion, sixty-seven million, two hundred fifty thousand, nine hundred sixteen".