20445232442255 has 8 divisors (see below), whose sum is σ = 24936480225024. Its totient is φ = 16088051757600.

The previous prime is 20445232442191. The next prime is 20445232442293. The reversal of 20445232442255 is 55224423254402.

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

It is not a de Polignac number, because 20445232442255 - 2⁶ = 20445232442191 is a prime.

It is a Duffinian 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, 33516774191 + ... + 33516774800.

It is an arithmetic number, because the mean of its divisors is an integer number (3117060028128).

Almost surely, 2^{20445232442255} is an apocalyptic number.

20445232442255 is a deficient number, since it is larger than the sum of its proper divisors (4491247782769).

20445232442255 is an equidigital number, since it uses as much as digits as its factorization.

20445232442255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67033549057.

The product of its (nonzero) digits is 3072000, while the sum is 44.

Adding to 20445232442255 its reverse (55224423254402), we get a palindrome (75669655696657).

The spelling of 20445232442255 in words is "twenty trillion, four hundred forty-five billion, two hundred thirty-two million, four hundred forty-two thousand, two hundred fifty-five".