406576478902 has 16 divisors (see below), whose sum is σ = 673322715072. Its totient is φ = 182580893320.

The previous prime is 406576478873. The next prime is 406576478921. The reversal of 406576478902 is 209874675604.

It is a happy number.

It is a super-2 number, since 2×406576478902² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111327988 + ... + 111331639.

It is an arithmetic number, because the mean of its divisors is an integer number (42082669692).

Almost surely, 2^406576478902 is an apocalyptic number.

406576478902 is a deficient number, since it is larger than the sum of its proper divisors (266746236170).

406576478902 is a wasteful number, since it uses less digits than its factorization.

406576478902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222659723.

The product of its (nonzero) digits is 20321280, while the sum is 58.

The spelling of 406576478902 in words is "four hundred six billion, five hundred seventy-six million, four hundred seventy-eight thousand, nine hundred two".