16600616661559 has 16 divisors (see below), whose sum is σ = 19214955832320. Its totient is φ = 14047033160160.

The previous prime is 16600616661527. The next prime is 16600616661631. The reversal of 16600616661559 is 95516661600661.

It is not a de Polignac number, because 16600616661559 - 2⁵ = 16600616661527 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16600616661059) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1906197 + ... + 6069169.

It is an arithmetic number, because the mean of its divisors is an integer number (1200934739520).

Almost surely, 2^{16600616661559} is an apocalyptic number.

16600616661559 is a deficient number, since it is larger than the sum of its proper divisors (2614339170761).

16600616661559 is an equidigital number, since it uses as much as digits as its factorization.

16600616661559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4170270.

The product of its (nonzero) digits is 10497600, while the sum is 58.

The spelling of 16600616661559 in words is "sixteen trillion, six hundred billion, six hundred sixteen million, six hundred sixty-one thousand, five hundred fifty-nine".