406578455427 has 16 divisors (see below), whose sum is σ = 598949337600. Its totient is φ = 244016395392.

The previous prime is 406578455369. The next prime is 406578455513. The reversal of 406578455427 is 724554875604.

It is not a de Polignac number, because 406578455427 - 2⁶ = 406578455363 is a prime.

It is not an unprimeable number, because it can be changed into a prime (406578455827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 173305927 + ... + 173308272.

It is an arithmetic number, because the mean of its divisors is an integer number (37434333600).

Almost surely, 2^406578455427 is an apocalyptic number.

406578455427 is a deficient number, since it is larger than the sum of its proper divisors (192370882173).

406578455427 is a wasteful number, since it uses less digits than its factorization.

406578455427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346614242.

The product of its (nonzero) digits is 37632000, while the sum is 57.

The spelling of 406578455427 in words is "four hundred six billion, five hundred seventy-eight million, four hundred fifty-five thousand, four hundred twenty-seven".