401706665473 has 2 divisors, whose sum is σ = 401706665474. Its totient is φ = 401706665472.

The previous prime is 401706665441. The next prime is 401706665497. The reversal of 401706665473 is 374566607104.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 323423102209 + 78283563264 = 568703^2 + 279792^2 .

It is a cyclic number.

It is not a de Polignac number, because 401706665473 - 2⁵ = 401706665441 is a prime.

It is a super-2 number, since 2×401706665473² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (401706675473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200853332736 + 200853332737.

It is an arithmetic number, because the mean of its divisors is an integer number (200853332737).

Almost surely, 2^401706665473 is an apocalyptic number.

It is an amenable number.

401706665473 is a deficient number, since it is larger than the sum of its proper divisors (1).

401706665473 is an equidigital number, since it uses as much as digits as its factorization.

401706665473 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2540160, while the sum is 49.

The spelling of 401706665473 in words is "four hundred one billion, seven hundred six million, six hundred sixty-five thousand, four hundred seventy-three".