20004000659 has 2 divisors, whose sum is σ = 20004000660. Its totient is φ = 20004000658.

The previous prime is 20004000649. The next prime is 20004000671. The reversal of 20004000659 is 95600040002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20004000659 - 2⁸ = 20004000403 is a prime.

It is not a weakly prime, because it can be changed into another prime (20004000629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10002000329 + 10002000330.

It is an arithmetic number, because the mean of its divisors is an integer number (10002000330).

Almost surely, 2^20004000659 is an apocalyptic number.

20004000659 is a deficient number, since it is larger than the sum of its proper divisors (1).

20004000659 is an equidigital number, since it uses as much as digits as its factorization.

20004000659 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 26.

The spelling of 20004000659 in words is "twenty billion, four million, six hundred fifty-nine", and thus it is an aban number.