7207565765481 has 63 divisors (see below), whose sum is σ = 11481431459701. Its totient is φ = 4521621014784.

The previous prime is 7207565765453. The next prime is 7207565765489. The reversal of 7207565765481 is 1845675657027.

It is a happy number.

The square root of 7207565765481 is 2684691.

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

7207565765481 is a `hidden beast` number, since 7 + 2 + 0 + 7 + 5 + 6 + 576 + 54 + 8 + 1 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 121406949225 + 7086158816256 = 348435^2 + 2661984^2 .

It is not a de Polignac number, because 7207565765481 - 2⁹ = 7207565764969 is a prime.

It is a super-2 number, since 2×7207565765481² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7207565765489) by changing a digit.

It is a polite number, since it can be written in 62 ways as a sum of consecutive naturals, for example, 1232270245 + ... + 1232276093.

Almost surely, 2^{7207565765481} is an apocalyptic number.

7207565765481 is the 2684691-st square number.

7207565765481 is the 1342346-th centered octagonal number.

It is an amenable number.

7207565765481 is a deficient number, since it is larger than the sum of its proper divisors (4273865694220).

7207565765481 is an frugal number, since it uses more digits than its factorization.

7207565765481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11750 (or 5869 counting only the distinct ones).

The product of its (nonzero) digits is 98784000, while the sum is 63.

The spelling of 7207565765481 in words is "seven trillion, two hundred seven billion, five hundred sixty-five million, seven hundred sixty-five thousand, four hundred eighty-one".