20508088320901 has 2 divisors, whose sum is σ = 20508088320902. Its totient is φ = 20508088320900.

The previous prime is 20508088320869. The next prime is 20508088320913. The reversal of 20508088320901 is 10902388080502.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20454145935876 + 53942385025 = 4522626^2 + 232255^2 .

It is a cyclic number.

It is not a de Polignac number, because 20508088320901 - 2⁵ = 20508088320869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20508088320001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10254044160450 + 10254044160451.

It is an arithmetic number, because the mean of its divisors is an integer number (10254044160451).

Almost surely, 2^{20508088320901} is an apocalyptic number.

It is an amenable number.

20508088320901 is a deficient number, since it is larger than the sum of its proper divisors (1).

20508088320901 is an equidigital number, since it uses as much as digits as its factorization.

20508088320901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 276480, while the sum is 46.

The spelling of 20508088320901 in words is "twenty trillion, five hundred eight billion, eighty-eight million, three hundred twenty thousand, nine hundred one".