499549545457 has 2 divisors, whose sum is σ = 499549545458. Its totient is φ = 499549545456.

The previous prime is 499549545389. The next prime is 499549545463. The reversal of 499549545457 is 754545945994.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 468883932001 + 30665613456 = 684751^2 + 175116^2 .

It is a cyclic number.

It is not a de Polignac number, because 499549545457 - 2⁷ = 499549545329 is a prime.

It is not a weakly prime, because it can be changed into another prime (499549545497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249774772728 + 249774772729.

It is an arithmetic number, because the mean of its divisors is an integer number (249774772729).

Almost surely, 2^499549545457 is an apocalyptic number.

It is an amenable number.

499549545457 is a deficient number, since it is larger than the sum of its proper divisors (1).

499549545457 is an equidigital number, since it uses as much as digits as its factorization.

499549545457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 816480000, while the sum is 70.

The spelling of 499549545457 in words is "four hundred ninety-nine billion, five hundred forty-nine million, five hundred forty-five thousand, four hundred fifty-seven".