720793565057 has 2 divisors, whose sum is σ = 720793565058. Its totient is φ = 720793565056.

The previous prime is 720793565033. The next prime is 720793565077. The reversal of 720793565057 is 750565397027.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 613189228096 + 107604336961 = 783064^2 + 328031^2 .

It is a cyclic number.

It is not a de Polignac number, because 720793565057 - 2⁸ = 720793564801 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 720793564993 and 720793565011.

It is not a weakly prime, because it can be changed into another prime (720793565027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 360396782528 + 360396782529.

It is an arithmetic number, because the mean of its divisors is an integer number (360396782529).

Almost surely, 2^720793565057 is an apocalyptic number.

It is an amenable number.

720793565057 is a deficient number, since it is larger than the sum of its proper divisors (1).

720793565057 is an equidigital number, since it uses as much as digits as its factorization.

720793565057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13891500, while the sum is 56.

The spelling of 720793565057 in words is "seven hundred twenty billion, seven hundred ninety-three million, five hundred sixty-five thousand, fifty-seven".