662743702805813 has 2 divisors, whose sum is σ = 662743702805814. Its totient is φ = 662743702805812.

The previous prime is 662743702805783. The next prime is 662743702805879. The reversal of 662743702805813 is 318508207347266.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 597662018554129 + 65081684251684 = 24447127^2 + 8067322^2 .

It is a cyclic number.

It is not a de Polignac number, because 662743702805813 - 2¹² = 662743702801717 is a prime.

It is a super-2 number, since 2×662743702805813² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (662743702805213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331371851402906 + 331371851402907.

It is an arithmetic number, because the mean of its divisors is an integer number (331371851402907).

Almost surely, 2^{662743702805813} is an apocalyptic number.

It is an amenable number.

662743702805813 is a deficient number, since it is larger than the sum of its proper divisors (1).

662743702805813 is an equidigital number, since it uses as much as digits as its factorization.

662743702805813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81285120, while the sum is 62.

The spelling of 662743702805813 in words is "six hundred sixty-two trillion, seven hundred forty-three billion, seven hundred two million, eight hundred five thousand, eight hundred thirteen".