20446006406 has 16 divisors (see below), whose sum is σ = 35061136416. Its totient is φ = 8759864256.

The previous prime is 20446006393. The next prime is 20446006409. The reversal of 20446006406 is 60460064402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20446006409) 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, 178601 + ... + 269796.

It is an arithmetic number, because the mean of its divisors is an integer number (2191321026).

Almost surely, 2^20446006406 is an apocalyptic number.

20446006406 is a deficient number, since it is larger than the sum of its proper divisors (14615130010).

20446006406 is a wasteful number, since it uses less digits than its factorization.

20446006406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451663.

The product of its (nonzero) digits is 27648, while the sum is 32.

The spelling of 20446006406 in words is "twenty billion, four hundred forty-six million, six thousand, four hundred six".