20733905017 has 16 divisors (see below), whose sum is σ = 23773017600. Its totient is φ = 17714144448.

The previous prime is 20733904993. The next prime is 20733905051. The reversal of 20733905017 is 71050933702.

It is a de Polignac number, because none of the positive numbers 2^k-20733905017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20733905417) 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, 7082208 + ... + 7085134.

It is an arithmetic number, because the mean of its divisors is an integer number (1485813600).

Almost surely, 2^20733905017 is an apocalyptic number.

It is an amenable number.

20733905017 is a deficient number, since it is larger than the sum of its proper divisors (3039112583).

20733905017 is a wasteful number, since it uses less digits than its factorization.

20733905017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5880.

The product of its (nonzero) digits is 39690, while the sum is 37.

The spelling of 20733905017 in words is "twenty billion, seven hundred thirty-three million, nine hundred five thousand, seventeen".