499998924661 has 2 divisors, whose sum is σ = 499998924662. Its totient is φ = 499998924660.

The previous prime is 499998924653. The next prime is 499998924673. The reversal of 499998924661 is 166429899994.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 495876514225 + 4122410436 = 704185^2 + 64206^2 .

It is a cyclic number.

It is not a de Polignac number, because 499998924661 - 2³ = 499998924653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (499998924631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249999462330 + 249999462331.

It is an arithmetic number, because the mean of its divisors is an integer number (249999462331).

Almost surely, 2^499998924661 is an apocalyptic number.

It is an amenable number.

499998924661 is a deficient number, since it is larger than the sum of its proper divisors (1).

499998924661 is an equidigital number, since it uses as much as digits as its factorization.

499998924661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 544195584, while the sum is 76.

The spelling of 499998924661 in words is "four hundred ninety-nine billion, nine hundred ninety-eight million, nine hundred twenty-four thousand, six hundred sixty-one".