475585966021 has 2 divisors, whose sum is σ = 475585966022. Its totient is φ = 475585966020.

The previous prime is 475585965979. The next prime is 475585966039. The reversal of 475585966021 is 120669585574.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 322635360100 + 152950605921 = 568010^2 + 391089^2 .

It is a cyclic number.

It is not a de Polignac number, because 475585966021 - 2¹¹ = 475585963973 is a prime.

It is a super-2 number, since 2×475585966021² (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 (475585966081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 237792983010 + 237792983011.

It is an arithmetic number, because the mean of its divisors is an integer number (237792983011).

Almost surely, 2^475585966021 is an apocalyptic number.

It is an amenable number.

475585966021 is a deficient number, since it is larger than the sum of its proper divisors (1).

475585966021 is an equidigital number, since it uses as much as digits as its factorization.

475585966021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144000, while the sum is 58.

The spelling of 475585966021 in words is "four hundred seventy-five billion, five hundred eighty-five million, nine hundred sixty-six thousand, twenty-one".