406390634660 has 48 divisors (see below), whose sum is σ = 859146462720. Its totient is φ = 161466264960.

The previous prime is 406390634647. The next prime is 406390634677. The reversal of 406390634660 is 66436093604.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9999461 + ... + 10040019.

It is an arithmetic number, because the mean of its divisors is an integer number (17898884640).

Almost surely, 2^406390634660 is an apocalyptic number.

It is an amenable number.

406390634660 is an abundant number, since it is smaller than the sum of its proper divisors (452755828060).

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

406390634660 is a wasteful number, since it uses less digits than its factorization.

406390634660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43916 (or 43914 counting only the distinct ones).

The product of its (nonzero) digits is 1679616, while the sum is 47.

The spelling of 406390634660 in words is "four hundred six billion, three hundred ninety million, six hundred thirty-four thousand, six hundred sixty".