20410350197 has 2 divisors, whose sum is σ = 20410350198. Its totient is φ = 20410350196.

The previous prime is 20410350131. The next prime is 20410350203. The reversal of 20410350197 is 79105301402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13095140356 + 7315209841 = 114434^2 + 85529^2 .

It is a cyclic number.

It is not a de Polignac number, because 20410350197 - 2²⁴ = 20393572981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20410355197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10205175098 + 10205175099.

It is an arithmetic number, because the mean of its divisors is an integer number (10205175099).

Almost surely, 2^20410350197 is an apocalyptic number.

It is an amenable number.

20410350197 is a deficient number, since it is larger than the sum of its proper divisors (1).

20410350197 is an equidigital number, since it uses as much as digits as its factorization.

20410350197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7560, while the sum is 32.

Adding to 20410350197 its reverse (79105301402), we get a palindrome (99515651599).

The spelling of 20410350197 in words is "twenty billion, four hundred ten million, three hundred fifty thousand, one hundred ninety-seven".