16687589846747 has 2 divisors, whose sum is σ = 16687589846748. Its totient is φ = 16687589846746.

The previous prime is 16687589846693. The next prime is 16687589846777. The reversal of 16687589846747 is 74764898578661.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16687589846747 - 2⁸ = 16687589846491 is a prime.

It is not a weakly prime, because it can be changed into another prime (16687589846777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8343794923373 + 8343794923374.

It is an arithmetic number, because the mean of its divisors is an integer number (8343794923374).

Almost surely, 2^{16687589846747} is an apocalyptic number.

16687589846747 is a deficient number, since it is larger than the sum of its proper divisors (1).

16687589846747 is an equidigital number, since it uses as much as digits as its factorization.

16687589846747 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27311800320, while the sum is 86.

The spelling of 16687589846747 in words is "sixteen trillion, six hundred eighty-seven billion, five hundred eighty-nine million, eight hundred forty-six thousand, seven hundred forty-seven".