20050123445 has 32 divisors (see below), whose sum is σ = 27750919680. Its totient is φ = 13753419840.

The previous prime is 20050123433. The next prime is 20050123451. The reversal of 20050123445 is 54432105002.

It is a happy number.

It is not a de Polignac number, because 20050123445 - 2⁶ = 20050123381 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 194954 + ... + 279476.

It is an arithmetic number, because the mean of its divisors is an integer number (867216240).

Almost surely, 2^20050123445 is an apocalyptic number.

It is an amenable number.

20050123445 is a deficient number, since it is larger than the sum of its proper divisors (7700796235).

20050123445 is a wasteful number, since it uses less digits than its factorization.

20050123445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84785.

The product of its (nonzero) digits is 4800, while the sum is 26.

Adding to 20050123445 its reverse (54432105002), we get a palindrome (74482228447).

The spelling of 20050123445 in words is "twenty billion, fifty million, one hundred twenty-three thousand, four hundred forty-five".