16003007999987 has 2 divisors, whose sum is σ = 16003007999988. Its totient is φ = 16003007999986.

The previous prime is 16003007999981. The next prime is 16003008000071. The reversal of 16003007999987 is 78999970030061.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16003007999987 - 2⁸ = 16003007999731 is a prime.

It is not a weakly prime, because it can be changed into another prime (16003007999981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8001503999993 + 8001503999994.

It is an arithmetic number, because the mean of its divisors is an integer number (8001503999994).

Almost surely, 2^{16003007999987} is an apocalyptic number.

16003007999987 is a deficient number, since it is larger than the sum of its proper divisors (1).

16003007999987 is an equidigital number, since it uses as much as digits as its factorization.

16003007999987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46294416, while the sum is 68.

The spelling of 16003007999987 in words is "sixteen trillion, three billion, seven million, nine hundred ninety-nine thousand, nine hundred eighty-seven".