10321009987 has 2 divisors, whose sum is σ = 10321009988. Its totient is φ = 10321009986.

The previous prime is 10321009973. The next prime is 10321010003. The reversal of 10321009987 is 78990012301.

10321009987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10321009987 - 2¹⁹ = 10320485699 is a prime.

It is not a weakly prime, because it can be changed into another prime (10321009967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5160504993 + 5160504994.

It is an arithmetic number, because the mean of its divisors is an integer number (5160504994).

Almost surely, 2^10321009987 is an apocalyptic number.

10321009987 is a deficient number, since it is larger than the sum of its proper divisors (1).

10321009987 is an equidigital number, since it uses as much as digits as its factorization.

10321009987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 40.

The spelling of 10321009987 in words is "ten billion, three hundred twenty-one million, nine thousand, nine hundred eighty-seven".