7528724645161 has 2 divisors, whose sum is σ = 7528724645162. Its totient is φ = 7528724645160.

The previous prime is 7528724645153. The next prime is 7528724645171. The reversal of 7528724645161 is 1615464278257.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3879249315561 + 3649475329600 = 1969581^2 + 1910360^2 .

It is an emirp because it is prime and its reverse (1615464278257) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7528724645161 - 2³ = 7528724645153 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7528724645096 and 7528724645105.

It is not a weakly prime, because it can be changed into another prime (7528724645171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3764362322580 + 3764362322581.

It is an arithmetic number, because the mean of its divisors is an integer number (3764362322581).

Almost surely, 2^{7528724645161} is an apocalyptic number.

It is an amenable number.

7528724645161 is a deficient number, since it is larger than the sum of its proper divisors (1).

7528724645161 is an equidigital number, since it uses as much as digits as its factorization.

7528724645161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22579200, while the sum is 58.

The spelling of 7528724645161 in words is "seven trillion, five hundred twenty-eight billion, seven hundred twenty-four million, six hundred forty-five thousand, one hundred sixty-one".