406506170506 has 4 divisors (see below), whose sum is σ = 609759255762. Its totient is φ = 203253085252.

The previous prime is 406506170471. The next prime is 406506170531. The reversal of 406506170506 is 605071605604.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 226228653225 + 180277517281 = 475635^2 + 424591^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101626542625 + ... + 101626542628.

Almost surely, 2^406506170506 is an apocalyptic number.

406506170506 is a deficient number, since it is larger than the sum of its proper divisors (203253085256).

406506170506 is a wasteful number, since it uses less digits than its factorization.

406506170506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203253085255.

The product of its (nonzero) digits is 151200, while the sum is 40.

The spelling of 406506170506 in words is "four hundred six billion, five hundred six million, one hundred seventy thousand, five hundred six".