406440351366 has 32 divisors (see below), whose sum is σ = 931668460800. Its totient is φ = 115793071776.

The previous prime is 406440351323. The next prime is 406440351377. The reversal of 406440351366 is 663153044604.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

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, 13849456 + ... + 13878771.

It is an arithmetic number, because the mean of its divisors is an integer number (29114639400).

Almost surely, 2^406440351366 is an apocalyptic number.

406440351366 is an abundant number, since it is smaller than the sum of its proper divisors (525228109434).

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

406440351366 is a wasteful number, since it uses less digits than its factorization.

406440351366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27728588.

The product of its (nonzero) digits is 622080, while the sum is 42.

The spelling of 406440351366 in words is "four hundred six billion, four hundred forty million, three hundred fifty-one thousand, three hundred sixty-six".