208020793090001 has 2 divisors, whose sum is σ = 208020793090002. Its totient is φ = 208020793090000.

The previous prime is 208020793089973. The next prime is 208020793090021. The reversal of 208020793090001 is 100090397020802.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 112775373180625 + 95245419909376 = 10619575^2 + 9759376^2 .

It is a cyclic number.

It is not a de Polignac number, because 208020793090001 - 2¹⁸ = 208020792827857 is a prime.

It is not a weakly prime, because it can be changed into another prime (208020793090021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 104010396545000 + 104010396545001.

It is an arithmetic number, because the mean of its divisors is an integer number (104010396545001).

Almost surely, 2^{208020793090001} is an apocalyptic number.

It is an amenable number.

208020793090001 is a deficient number, since it is larger than the sum of its proper divisors (1).

208020793090001 is an equidigital number, since it uses as much as digits as its factorization.

208020793090001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 41.

The spelling of 208020793090001 in words is "two hundred eight trillion, twenty billion, seven hundred ninety-three million, ninety thousand, one".