475760631221 has 2 divisors, whose sum is σ = 475760631222. Its totient is φ = 475760631220.

The previous prime is 475760631163. The next prime is 475760631289. The reversal of 475760631221 is 122136067574.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 412952752996 + 62807878225 = 642614^2 + 250615^2 .

It is a cyclic number.

It is not a de Polignac number, because 475760631221 - 2³⁴ = 458580762037 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (475760631121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 237880315610 + 237880315611.

It is an arithmetic number, because the mean of its divisors is an integer number (237880315611).

Almost surely, 2^475760631221 is an apocalyptic number.

It is an amenable number.

475760631221 is a deficient number, since it is larger than the sum of its proper divisors (1).

475760631221 is an equidigital number, since it uses as much as digits as its factorization.

475760631221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 423360, while the sum is 44.

Adding to 475760631221 its reverse (122136067574), we get a palindrome (597896698795).

The spelling of 475760631221 in words is "four hundred seventy-five billion, seven hundred sixty million, six hundred thirty-one thousand, two hundred twenty-one".