499012680181 has 2 divisors, whose sum is σ = 499012680182. Its totient is φ = 499012680180.

The previous prime is 499012680167. The next prime is 499012680233. The reversal of 499012680181 is 181086210994.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 479509161156 + 19503519025 = 692466^2 + 139655^2 .

It is a cyclic number.

It is not a de Polignac number, because 499012680181 - 2⁷ = 499012680053 is a prime.

It is a super-2 number, since 2×499012680181² (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 (499012680151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249506340090 + 249506340091.

It is an arithmetic number, because the mean of its divisors is an integer number (249506340091).

Almost surely, 2^499012680181 is an apocalyptic number.

It is an amenable number.

499012680181 is a deficient number, since it is larger than the sum of its proper divisors (1).

499012680181 is an equidigital number, since it uses as much as digits as its factorization.

499012680181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 248832, while the sum is 49.

The spelling of 499012680181 in words is "four hundred ninety-nine billion, twelve million, six hundred eighty thousand, one hundred eighty-one".