490715997281 has 2 divisors, whose sum is σ = 490715997282. Its totient is φ = 490715997280.

The previous prime is 490715997223. The next prime is 490715997313. The reversal of 490715997281 is 182799517094.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 354197571025 + 136518426256 = 595145^2 + 369484^2 .

It is a cyclic number.

It is not a de Polignac number, because 490715997281 - 2⁶ = 490715997217 is a prime.

It is a super-2 number, since 2×490715997281² (a number of 24 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (490715997581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245357998640 + 245357998641.

It is an arithmetic number, because the mean of its divisors is an integer number (245357998641).

Almost surely, 2^490715997281 is an apocalyptic number.

It is an amenable number.

490715997281 is a deficient number, since it is larger than the sum of its proper divisors (1).

490715997281 is an equidigital number, since it uses as much as digits as its factorization.

490715997281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11430720, while the sum is 62.

The spelling of 490715997281 in words is "four hundred ninety billion, seven hundred fifteen million, nine hundred ninety-seven thousand, two hundred eighty-one".