405666432207 has 12 divisors (see below), whose sum is σ = 616802762680. Its totient is φ = 256210378128.

The previous prime is 405666432187. The next prime is 405666432263. The reversal of 405666432207 is 702234666504.

It is not a de Polignac number, because 405666432207 - 2¹⁶ = 405666366671 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405666432277) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1186158988 + ... + 1186159329.

Almost surely, 2^405666432207 is an apocalyptic number.

405666432207 is a deficient number, since it is larger than the sum of its proper divisors (211136330473).

405666432207 is a wasteful number, since it uses less digits than its factorization.

405666432207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2372318342 (or 2372318339 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 45.

The spelling of 405666432207 in words is "four hundred five billion, six hundred sixty-six million, four hundred thirty-two thousand, two hundred seven".