16655066199987 has 16 divisors (see below), whose sum is σ = 22240071010560. Its totient is φ = 11086727117472.

The previous prime is 16655066199979. The next prime is 16655066199997. The reversal of 16655066199987 is 78999166055661.

It is not a de Polignac number, because 16655066199987 - 2³ = 16655066199979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16655066199977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7724464 + ... + 9642482.

It is an arithmetic number, because the mean of its divisors is an integer number (1390004438160).

Almost surely, 2^{16655066199987} is an apocalyptic number.

16655066199987 is a deficient number, since it is larger than the sum of its proper divisors (5585004810573).

16655066199987 is a wasteful number, since it uses less digits than its factorization.

16655066199987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1922362.

The product of its (nonzero) digits is 1322697600, while the sum is 78.

The spelling of 16655066199987 in words is "sixteen trillion, six hundred fifty-five billion, sixty-six million, one hundred ninety-nine thousand, nine hundred eighty-seven".