7248689581537 has 2 divisors, whose sum is σ = 7248689581538. Its totient is φ = 7248689581536.

The previous prime is 7248689581519. The next prime is 7248689581541. The reversal of 7248689581537 is 7351859868427.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7209203520016 + 39486061521 = 2684996^2 + 198711^2 .

It is a cyclic number.

It is not a de Polignac number, because 7248689581537 - 2¹⁹ = 7248689057249 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7248689581537.

It is not a weakly prime, because it can be changed into another prime (7248689581577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3624344790768 + 3624344790769.

It is an arithmetic number, because the mean of its divisors is an integer number (3624344790769).

Almost surely, 2^{7248689581537} is an apocalyptic number.

It is an amenable number.

7248689581537 is a deficient number, since it is larger than the sum of its proper divisors (1).

7248689581537 is an equidigital number, since it uses as much as digits as its factorization.

7248689581537 is an evil number, because the sum of its binary digits is even.

The product of its digits is 812851200, while the sum is 73.

The spelling of 7248689581537 in words is "seven trillion, two hundred forty-eight billion, six hundred eighty-nine million, five hundred eighty-one thousand, five hundred thirty-seven".