20664224004446 has 32 divisors (see below), whose sum is σ = 33878468153088. Its totient is φ = 9374982906240.

The previous prime is 20664224004433. The next prime is 20664224004467. The reversal of 20664224004446 is 64440042246602.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20664224004397 and 20664224004406.

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, 40068701 + ... + 40581143.

It is an arithmetic number, because the mean of its divisors is an integer number (1058702129784).

Almost surely, 2^{20664224004446} is an apocalyptic number.

20664224004446 is a deficient number, since it is larger than the sum of its proper divisors (13214244148642).

20664224004446 is a wasteful number, since it uses less digits than its factorization.

20664224004446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 515936.

The product of its (nonzero) digits is 1769472, while the sum is 44.

The spelling of 20664224004446 in words is "twenty trillion, six hundred sixty-four billion, two hundred twenty-four million, four thousand, four hundred forty-six".