208488820801 has 2 divisors, whose sum is σ = 208488820802. Its totient is φ = 208488820800.

The previous prime is 208488820753. The next prime is 208488820829. The reversal of 208488820801 is 108028884802.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 180966010801 + 27522810000 = 425401^2 + 165900^2 .

It is a cyclic number.

It is not a de Polignac number, because 208488820801 - 2²⁹ = 207951949889 is a prime.

It is a super-3 number, since 3×208488820801³ (a number of 35 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (208488820201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 104244410400 + 104244410401.

It is an arithmetic number, because the mean of its divisors is an integer number (104244410401).

Almost surely, 2^208488820801 is an apocalyptic number.

It is an amenable number.

208488820801 is a deficient number, since it is larger than the sum of its proper divisors (1).

208488820801 is an equidigital number, since it uses as much as digits as its factorization.

208488820801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 524288, while the sum is 49.

The spelling of 208488820801 in words is "two hundred eight billion, four hundred eighty-eight million, eight hundred twenty thousand, eight hundred one".