20834000005 has 32 divisors (see below), whose sum is σ = 30784739328. Its totient is φ = 13181011200.

The previous prime is 20833999999. The next prime is 20834000017. The reversal of 20834000005 is 50000043802.

It is not a de Polignac number, because 20834000005 - 2¹¹ = 20833997957 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20834000005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1073740 + ... + 1092970.

It is an arithmetic number, because the mean of its divisors is an integer number (962023104).

Almost surely, 2^20834000005 is an apocalyptic number.

20834000005 is the 83335-th octagonal number.

It is an amenable number.

20834000005 is a deficient number, since it is larger than the sum of its proper divisors (9950739323).

20834000005 is a wasteful number, since it uses less digits than its factorization.

20834000005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21637.

The product of its (nonzero) digits is 960, while the sum is 22.

Adding to 20834000005 its reverse (50000043802), we get a palindrome (70834043807).

The spelling of 20834000005 in words is "twenty billion, eight hundred thirty-four million, five", and thus it is an aban number.