406685164068321 has 8 divisors (see below), whose sum is σ = 547045530428640. Its totient is φ = 268724120210112.

The previous prime is 406685164068269. The next prime is 406685164068329. The reversal of 406685164068321 is 123860461586604.

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

It is not a de Polignac number, because 406685164068321 - 2²¹ = 406685161971169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (406685164068329) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 599830625131 + ... + 599830625808.

It is an arithmetic number, because the mean of its divisors is an integer number (68380691303580).

Almost surely, 2^{406685164068321} is an apocalyptic number.

It is an amenable number.

406685164068321 is a deficient number, since it is larger than the sum of its proper divisors (140360366360319).

406685164068321 is a wasteful number, since it uses less digits than its factorization.

406685164068321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1199661251055.

The product of its (nonzero) digits is 39813120, while the sum is 60.

The spelling of 406685164068321 in words is "four hundred six trillion, six hundred eighty-five billion, one hundred sixty-four million, sixty-eight thousand, three hundred twenty-one".