16927999987 has 2 divisors, whose sum is σ = 16927999988. Its totient is φ = 16927999986.

The previous prime is 16927999967. The next prime is 16928000021. The reversal of 16927999987 is 78999972961.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16927999987 - 2¹⁵ = 16927967219 is a prime.

It is a zygodrome in base 2.

It is not a weakly prime, because it can be changed into another prime (16927999967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8463999993 + 8463999994.

It is an arithmetic number, because the mean of its divisors is an integer number (8463999994).

Almost surely, 2^16927999987 is an apocalyptic number.

16927999987 is a deficient number, since it is larger than the sum of its proper divisors (1).

16927999987 is an equidigital number, since it uses as much as digits as its factorization.

16927999987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 277766496, while the sum is 76.

The spelling of 16927999987 in words is "sixteen billion, nine hundred twenty-seven million, nine hundred ninety-nine thousand, nine hundred eighty-seven".