20100001087 has 2 divisors, whose sum is σ = 20100001088. Its totient is φ = 20100001086.

The previous prime is 20100001073. The next prime is 20100001121. The reversal of 20100001087 is 78010000102.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20100001087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20100001037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10050000543 + 10050000544.

It is an arithmetic number, because the mean of its divisors is an integer number (10050000544).

Almost surely, 2^20100001087 is an apocalyptic number.

20100001087 is a deficient number, since it is larger than the sum of its proper divisors (1).

20100001087 is an equidigital number, since it uses as much as digits as its factorization.

20100001087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112, while the sum is 19.

Adding to 20100001087 its reverse (78010000102), we get a palindrome (98110001189).

The spelling of 20100001087 in words is "twenty billion, one hundred million, one thousand, eighty-seven".