720540528808996 has 135 divisors (see below), whose sum is σ = 1537883154906161. Its totient is φ = 295352059914912.

The previous prime is 720540528808967. The next prime is 720540528809069. The reversal of 720540528808996 is 699808825045027.

The square root of 720540528808996 is 26842886.

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

It can be written as a sum of positive squares in only one way, i.e., 242514778368996 + 478025750440000 = 15572886^2 + 21863800^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 60503859090 + ... + 60503870998.

Almost surely, 2^{720540528808996} is an apocalyptic number.

720540528808996 is the 26842886-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 720540528808996

720540528808996 is an abundant number, since it is smaller than the sum of its proper divisors (817342626097165).

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

720540528808996 is an frugal number, since it uses more digits than its factorization.

720540528808996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23896 (or 11941 counting only the distinct ones).

The product of its (nonzero) digits is 696729600, while the sum is 73.

The spelling of 720540528808996 in words is "seven hundred twenty trillion, five hundred forty billion, five hundred twenty-eight million, eight hundred eight thousand, nine hundred ninety-six".