64520320324 has 6 divisors (see below), whose sum is σ = 112910560574. Its totient is φ = 32260160160.

The previous prime is 64520320279. The next prime is 64520320339. The reversal of 64520320324 is 42302302546.

It can be written as a sum of positive squares in only one way, i.e., 32339548224 + 32180772100 = 179832^2 + 179390^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 8065040037 + ... + 8065040044.

Almost surely, 2^64520320324 is an apocalyptic number.

It is an amenable number.

64520320324 is a deficient number, since it is larger than the sum of its proper divisors (48390240250).

64520320324 is a wasteful number, since it uses less digits than its factorization.

64520320324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16130080085 (or 16130080083 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 31.

The spelling of 64520320324 in words is "sixty-four billion, five hundred twenty million, three hundred twenty thousand, three hundred twenty-four".