20315305544023 has 6 divisors (see below), whose sum is σ = 23632090122696. Its totient is φ = 17413119037692.

The previous prime is 20315305544021. The next prime is 20315305544033. The reversal of 20315305544023 is 32044550351302.

It is not a de Polignac number, because 20315305544023 - 2¹ = 20315305544021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20315305544021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 207299036115 + ... + 207299036212.

It is an arithmetic number, because the mean of its divisors is an integer number (3938681687116).

Almost surely, 2^{20315305544023} is an apocalyptic number.

20315305544023 is a deficient number, since it is larger than the sum of its proper divisors (3316784578673).

20315305544023 is an equidigital number, since it uses as much as digits as its factorization.

20315305544023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414598072341 (or 414598072334 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 37.

Adding to 20315305544023 its reverse (32044550351302), we get a palindrome (52359855895325).

The spelling of 20315305544023 in words is "twenty trillion, three hundred fifteen billion, three hundred five million, five hundred forty-four thousand, twenty-three".