220642466406 has 16 divisors (see below), whose sum is σ = 441376905648. Its totient is φ = 73532160000.

The previous prime is 220642466381. The next prime is 220642466413. The reversal of 220642466406 is 604664246022.

It is a Curzon number.

It is a congruent 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, 3800995 + ... + 3858606.

It is an arithmetic number, because the mean of its divisors is an integer number (27586056603).

Almost surely, 2^220642466406 is an apocalyptic number.

220642466406 is an abundant number, since it is smaller than the sum of its proper divisors (220734439242).

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

220642466406 is a wasteful number, since it uses less digits than its factorization.

220642466406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7664407.

The product of its (nonzero) digits is 663552, while the sum is 42.

The spelling of 220642466406 in words is "two hundred twenty billion, six hundred forty-two million, four hundred sixty-six thousand, four hundred six".