64324698791824 has 135 divisors (see below), whose sum is σ = 130985370499347. Its totient is φ = 30600723013632.

The previous prime is 64324698791791. The next prime is 64324698791839. The reversal of 64324698791824 is 42819789642346.

The square root of 64324698791824 is 8020268.

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

It can be written as a sum of positive squares in 4 ways, for example, as 30839496302224 + 33485202489600 = 5553332^2 + 5786640^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 55788983632 + ... + 55788984784.

Almost surely, 2^{64324698791824} is an apocalyptic number.

64324698791824 is the 8020268-th square number.

It is an amenable number.

64324698791824 is an abundant number, since it is smaller than the sum of its proper divisors (66660671707523).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64324698791824 is an frugal number, since it uses more digits than its factorization.

64324698791824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2482 (or 1239 counting only the distinct ones).

The product of its digits is 1003290624, while the sum is 73.

The spelling of 64324698791824 in words is "sixty-four trillion, three hundred twenty-four billion, six hundred ninety-eight million, seven hundred ninety-one thousand, eight hundred twenty-four".