20445206523234 has 16 divisors (see below), whose sum is σ = 40927824233472. Its totient is φ = 6808833643248.

The previous prime is 20445206523229. The next prime is 20445206523283. The reversal of 20445206523234 is 43232560254402.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1558792354 + ... + 1558805469.

It is an arithmetic number, because the mean of its divisors is an integer number (2557989014592).

Almost surely, 2^{20445206523234} is an apocalyptic number.

20445206523234 is an abundant number, since it is smaller than the sum of its proper divisors (20482617710238).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20445206523234 is a wasteful number, since it uses less digits than its factorization.

20445206523234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3117598921.

The product of its (nonzero) digits is 1382400, while the sum is 42.

Adding to 20445206523234 its reverse (43232560254402), we get a palindrome (63677766777636).

The spelling of 20445206523234 in words is "twenty trillion, four hundred forty-five billion, two hundred six million, five hundred twenty-three thousand, two hundred thirty-four".