20533122005 has 16 divisors (see below), whose sum is σ = 28048408704. Its totient is φ = 14283910080.

The previous prime is 20533121953. The next prime is 20533122007. The reversal of 20533122005 is 50022133502.

It is not a de Polignac number, because 20533122005 - 2¹² = 20533117909 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20533122007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8114594 + ... + 8117123.

It is an arithmetic number, because the mean of its divisors is an integer number (1753025544).

Almost surely, 2^20533122005 is an apocalyptic number.

It is an amenable number.

20533122005 is a deficient number, since it is larger than the sum of its proper divisors (7515286699).

20533122005 is a wasteful number, since it uses less digits than its factorization.

20533122005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16231756.

The product of its (nonzero) digits is 1800, while the sum is 23.

Adding to 20533122005 its reverse (50022133502), we get a palindrome (70555255507).

The spelling of 20533122005 in words is "twenty billion, five hundred thirty-three million, one hundred twenty-two thousand, five".