466520421781 has 2 divisors, whose sum is σ = 466520421782. Its totient is φ = 466520421780.

The previous prime is 466520421737. The next prime is 466520421791. The reversal of 466520421781 is 187124025664.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 384958202500 + 81562219281 = 620450^2 + 285591^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-466520421781 is a prime.

It is a super-2 number, since 2×466520421781² (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 (466520421791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 233260210890 + 233260210891.

It is an arithmetic number, because the mean of its divisors is an integer number (233260210891).

Almost surely, 2^466520421781 is an apocalyptic number.

It is an amenable number.

466520421781 is a deficient number, since it is larger than the sum of its proper divisors (1).

466520421781 is an equidigital number, since it uses as much as digits as its factorization.

466520421781 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 645120, while the sum is 46.

The spelling of 466520421781 in words is "four hundred sixty-six billion, five hundred twenty million, four hundred twenty-one thousand, seven hundred eighty-one".