20533722017 has 8 divisors (see below), whose sum is σ = 22247207136. Its totient is φ = 18876416832.

The previous prime is 20533721993. The next prime is 20533722023. The reversal of 20533722017 is 71022733502.

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

It is a cyclic number.

It is not a de Polignac number, because 20533722017 - 2¹⁰ = 20533720993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20533727017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14044223 + ... + 14045684.

It is an arithmetic number, because the mean of its divisors is an integer number (2780900892).

Almost surely, 2^20533722017 is an apocalyptic number.

It is an amenable number.

20533722017 is a deficient number, since it is larger than the sum of its proper divisors (1713485119).

20533722017 is a wasteful number, since it uses less digits than its factorization.

20533722017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28089967.

The product of its (nonzero) digits is 17640, while the sum is 32.

The spelling of 20533722017 in words is "twenty billion, five hundred thirty-three million, seven hundred twenty-two thousand, seventeen".