20354205432266 has 32 divisors (see below), whose sum is σ = 32475072439440. Its totient is φ = 9534672654336.

The previous prime is 20354205432259. The next prime is 20354205432293. The reversal of 20354205432266 is 66223450245302.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 17969790768241 + 2384414664025 = 4239079^2 + 1544155^2 .

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, 38174726 + ... + 38704238.

Almost surely, 2^{20354205432266} is an apocalyptic number.

20354205432266 is a deficient number, since it is larger than the sum of its proper divisors (12120867007174).

20354205432266 is a wasteful number, since it uses less digits than its factorization.

20354205432266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 534698.

The product of its (nonzero) digits is 2073600, while the sum is 44.

Adding to 20354205432266 its reverse (66223450245302), we get a palindrome (86577655677568).

The spelling of 20354205432266 in words is "twenty trillion, three hundred fifty-four billion, two hundred five million, four hundred thirty-two thousand, two hundred sixty-six".