20355253401466 has 8 divisors (see below), whose sum is σ = 30533839838100. Its totient is φ = 10177306788768.

The previous prime is 20355253401433. The next prime is 20355253401479. The reversal of 20355253401466 is 66410435255302.

It can be written as a sum of positive squares in 2 ways, for example, as 20027674602441 + 327578799025 = 4475229^2 + 572345^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 159876441 + ... + 160003708.

Almost surely, 2^{20355253401466} is an apocalyptic number.

20355253401466 is a deficient number, since it is larger than the sum of its proper divisors (10178586436634).

20355253401466 is a wasteful number, since it uses less digits than its factorization.

20355253401466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319911968.

The product of its (nonzero) digits is 2592000, while the sum is 46.

Adding to 20355253401466 its reverse (66410435255302), we get a palindrome (86765688656768).

The spelling of 20355253401466 in words is "twenty trillion, three hundred fifty-five billion, two hundred fifty-three million, four hundred one thousand, four hundred sixty-six".