461785479209 has 2 divisors, whose sum is σ = 461785479210. Its totient is φ = 461785479208.

The previous prime is 461785479191. The next prime is 461785479217. The reversal of 461785479209 is 902974587164.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 286810589209 + 174974890000 = 535547^2 + 418300^2 .

It is a cyclic number.

It is not a de Polignac number, because 461785479209 - 2⁸ = 461785478953 is a prime.

It is not a weakly prime, because it can be changed into another prime (461785479509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 230892739604 + 230892739605.

It is an arithmetic number, because the mean of its divisors is an integer number (230892739605).

Almost surely, 2^461785479209 is an apocalyptic number.

It is an amenable number.

461785479209 is a deficient number, since it is larger than the sum of its proper divisors (1).

461785479209 is an equidigital number, since it uses as much as digits as its factorization.

461785479209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30481920, while the sum is 62.

The spelling of 461785479209 in words is "four hundred sixty-one billion, seven hundred eighty-five million, four hundred seventy-nine thousand, two hundred nine".