499731064549 has 2 divisors, whose sum is σ = 499731064550. Its totient is φ = 499731064548.

The previous prime is 499731064543. The next prime is 499731064571. The reversal of 499731064549 is 945460137994.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 298831689025 + 200899375524 = 546655^2 + 448218^2 .

It is a cyclic number.

It is not a de Polignac number, because 499731064549 - 2⁹ = 499731064037 is a prime.

It is a super-2 number, since 2×499731064549² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (499731064543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249865532274 + 249865532275.

It is an arithmetic number, because the mean of its divisors is an integer number (249865532275).

Almost surely, 2^499731064549 is an apocalyptic number.

It is an amenable number.

499731064549 is a deficient number, since it is larger than the sum of its proper divisors (1).

499731064549 is an equidigital number, since it uses as much as digits as its factorization.

499731064549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 29393280, while the sum is 61.

The spelling of 499731064549 in words is "four hundred ninety-nine billion, seven hundred thirty-one million, sixty-four thousand, five hundred forty-nine".