20002088556641 has 2 divisors, whose sum is σ = 20002088556642. Its totient is φ = 20002088556640.

The previous prime is 20002088556631. The next prime is 20002088556739. The reversal of 20002088556641 is 14665588020002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19801868105041 + 200220451600 = 4449929^2 + 447460^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20002088556641 is a prime.

It is not a weakly prime, because it can be changed into another prime (20002088556631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10001044278320 + 10001044278321.

It is an arithmetic number, because the mean of its divisors is an integer number (10001044278321).

Almost surely, 2^{20002088556641} is an apocalyptic number.

It is an amenable number.

20002088556641 is a deficient number, since it is larger than the sum of its proper divisors (1).

20002088556641 is an equidigital number, since it uses as much as digits as its factorization.

20002088556641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 921600, while the sum is 47.

The spelling of 20002088556641 in words is "twenty trillion, two billion, eighty-eight million, five hundred fifty-six thousand, six hundred forty-one".