720325517140168 has 8 divisors (see below), whose sum is σ = 1350610344637830. Its totient is φ = 360162758570080.

The previous prime is 720325517140127. The next prime is 720325517140219. The reversal of 720325517140168 is 861041715523027.

It can be written as a sum of positive squares in only one way, i.e., 555440348399524 + 164885168740644 = 23567782^2 + 12840762^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45020344821253 + ... + 45020344821268.

Almost surely, 2^{720325517140168} is an apocalyptic number.

It is an amenable number.

720325517140168 is a deficient number, since it is larger than the sum of its proper divisors (630284827497662).

720325517140168 is a wasteful number, since it uses less digits than its factorization.

720325517140168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90040689642527 (or 90040689642523 counting only the distinct ones).

The product of its (nonzero) digits is 2822400, while the sum is 52.

The spelling of 720325517140168 in words is "seven hundred twenty trillion, three hundred twenty-five billion, five hundred seventeen million, one hundred forty thousand, one hundred sixty-eight".