7047998257 has 2 divisors, whose sum is σ = 7047998258. Its totient is φ = 7047998256.

The previous prime is 7047998207. The next prime is 7047998297. The reversal of 7047998257 is 7528997407.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6029367201 + 1018631056 = 77649^2 + 31916^2 .

It is a cyclic number.

It is not a de Polignac number, because 7047998257 - 2²⁷ = 6913780529 is a prime.

It is not a weakly prime, because it can be changed into another prime (7047998207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3523999128 + 3523999129.

It is an arithmetic number, because the mean of its divisors is an integer number (3523999129).

Almost surely, 2^7047998257 is an apocalyptic number.

It is an amenable number.

7047998257 is a deficient number, since it is larger than the sum of its proper divisors (1).

7047998257 is an equidigital number, since it uses as much as digits as its factorization.

7047998257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8890560, while the sum is 58.

The square root of 7047998257 is about 83952.3570663743. The cubic root of 7047998257 is about 1917.2934826629.

The spelling of 7047998257 in words is "seven billion, forty-seven million, nine hundred ninety-eight thousand, two hundred fifty-seven".