406663438060 has 144 divisors (see below), whose sum is σ = 945009628416. Its totient is φ = 146995640000.

The previous prime is 406663438033. The next prime is 406663438141. The reversal of 406663438060 is 60834366604.

It is a self number, because there is not a number n which added to its sum of digits gives 406663438060.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 808475769 + ... + 808476271.

It is an arithmetic number, because the mean of its divisors is an integer number (6562566864).

Almost surely, 2^406663438060 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 406663438060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (472504814208).

406663438060 is an abundant number, since it is smaller than the sum of its proper divisors (538346190356).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

406663438060 is an equidigital number, since it uses as much as digits as its factorization.

406663438060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 818 (or 772 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 46.

The spelling of 406663438060 in words is "four hundred six billion, six hundred sixty-three million, four hundred thirty-eight thousand, sixty".