20508120595201 has 2 divisors, whose sum is σ = 20508120595202. Its totient is φ = 20508120595200.

The previous prime is 20508120595199. The next prime is 20508120595217. The reversal of 20508120595201 is 10259502180502.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17514099450225 + 2994021144976 = 4184985^2 + 1730324^2 .

It is a cyclic number.

It is not a de Polignac number, because 20508120595201 - 2¹ = 20508120595199 is a prime.

Together with 20508120595199, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (20508120595231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10254060297600 + 10254060297601.

It is an arithmetic number, because the mean of its divisors is an integer number (10254060297601).

Almost surely, 2^{20508120595201} is an apocalyptic number.

It is an amenable number.

20508120595201 is a deficient number, since it is larger than the sum of its proper divisors (1).

20508120595201 is an equidigital number, since it uses as much as digits as its factorization.

20508120595201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72000, while the sum is 40.

The spelling of 20508120595201 in words is "twenty trillion, five hundred eight billion, one hundred twenty million, five hundred ninety-five thousand, two hundred one".