406320113665 has 8 divisors (see below), whose sum is σ = 487587967848. Its totient is φ = 325053536640.

The previous prime is 406320113623. The next prime is 406320113681. The reversal of 406320113665 is 566311023604.

It can be written as a sum of positive squares in 4 ways, for example, as 28994937841 + 377325175824 = 170279^2 + 614268^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 406320113665 - 2⁹ = 406320113153 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 645859 + ... + 1108951.

It is an arithmetic number, because the mean of its divisors is an integer number (60948495981).

Almost surely, 2^406320113665 is an apocalyptic number.

It is an amenable number.

406320113665 is a deficient number, since it is larger than the sum of its proper divisors (81267854183).

406320113665 is a wasteful number, since it uses less digits than its factorization.

406320113665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 638579.

The product of its (nonzero) digits is 77760, while the sum is 37.

The spelling of 406320113665 in words is "four hundred six billion, three hundred twenty million, one hundred thirteen thousand, six hundred sixty-five".