499820013401 has 2 divisors, whose sum is σ = 499820013402. Its totient is φ = 499820013400.

The previous prime is 499820013391. The next prime is 499820013463. The reversal of 499820013401 is 104310028994.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 410464455625 + 89355557776 = 640675^2 + 298924^2 .

It is a cyclic number.

It is not a de Polignac number, because 499820013401 - 2⁶ = 499820013337 is a prime.

It is not a weakly prime, because it can be changed into another prime (499820013701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249910006700 + 249910006701.

It is an arithmetic number, because the mean of its divisors is an integer number (249910006701).

Almost surely, 2^499820013401 is an apocalyptic number.

It is an amenable number.

499820013401 is a deficient number, since it is larger than the sum of its proper divisors (1).

499820013401 is an equidigital number, since it uses as much as digits as its factorization.

499820013401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62208, while the sum is 41.

The spelling of 499820013401 in words is "four hundred ninety-nine billion, eight hundred twenty million, thirteen thousand, four hundred one".