662806748131813 has 2 divisors, whose sum is σ = 662806748131814. Its totient is φ = 662806748131812.

The previous prime is 662806748131811. The next prime is 662806748131951. The reversal of 662806748131813 is 318131847608266.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 635284060244964 + 27522687886849 = 25204842^2 + 5246207^2 .

It is a cyclic number.

It is not a de Polignac number, because 662806748131813 - 2¹ = 662806748131811 is a prime.

Together with 662806748131811, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (662806748131811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331403374065906 + 331403374065907.

It is an arithmetic number, because the mean of its divisors is an integer number (331403374065907).

Almost surely, 2^{662806748131813} is an apocalyptic number.

It is an amenable number.

662806748131813 is a deficient number, since it is larger than the sum of its proper divisors (1).

662806748131813 is an equidigital number, since it uses as much as digits as its factorization.

662806748131813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 55738368, while the sum is 64.

The spelling of 662806748131813 in words is "six hundred sixty-two trillion, eight hundred six billion, seven hundred forty-eight million, one hundred thirty-one thousand, eight hundred thirteen".