20000195087 has 2 divisors, whose sum is σ = 20000195088. Its totient is φ = 20000195086.

The previous prime is 20000195041. The next prime is 20000195141. The reversal of 20000195087 is 78059100002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20000195087 - 2³⁰ = 18926453263 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20000195027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10000097543 + 10000097544.

It is an arithmetic number, because the mean of its divisors is an integer number (10000097544).

Almost surely, 2^20000195087 is an apocalyptic number.

20000195087 is a deficient number, since it is larger than the sum of its proper divisors (1).

20000195087 is an equidigital number, since it uses as much as digits as its factorization.

20000195087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 32.

Adding to 20000195087 its reverse (78059100002), we get a palindrome (98059295089).

The spelling of 20000195087 in words is "twenty billion, one hundred ninety-five thousand, eighty-seven".