10001009987 has 2 divisors, whose sum is σ = 10001009988. Its totient is φ = 10001009986.

The previous prime is 10001009971. The next prime is 10001010007. The reversal of 10001009987 is 78990010001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10001009987 - 2⁴ = 10001009971 is a prime.

It is not a weakly prime, because it can be changed into another prime (10001009947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5000504993 + 5000504994.

It is an arithmetic number, because the mean of its divisors is an integer number (5000504994).

Almost surely, 2^10001009987 is an apocalyptic number.

10001009987 is a deficient number, since it is larger than the sum of its proper divisors (1).

10001009987 is an equidigital number, since it uses as much as digits as its factorization.

10001009987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 35.

Adding to 10001009987 its reverse (78990010001), we get a palindrome (88991019988).

The spelling of 10001009987 in words is "ten billion, one million, nine thousand, nine hundred eighty-seven".