499905561611 has 2 divisors, whose sum is σ = 499905561612. Its totient is φ = 499905561610.

The previous prime is 499905561593. The next prime is 499905561641. The reversal of 499905561611 is 116165509994.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 499905561611 - 2²⁶ = 499838452747 is a prime.

It is not a weakly prime, because it can be changed into another prime (499905561641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249952780805 + 249952780806.

It is an arithmetic number, because the mean of its divisors is an integer number (249952780806).

Almost surely, 2^499905561611 is an apocalyptic number.

499905561611 is a deficient number, since it is larger than the sum of its proper divisors (1).

499905561611 is an equidigital number, since it uses as much as digits as its factorization.

499905561611 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2624400, while the sum is 56.

The spelling of 499905561611 in words is "four hundred ninety-nine billion, nine hundred five million, five hundred sixty-one thousand, six hundred eleven".