16055106661 has 16 divisors (see below), whose sum is σ = 17580441600. Its totient is φ = 14540828400.

The previous prime is 16055106653. The next prime is 16055106703. The reversal of 16055106661 is 16660155061.

It is a cyclic number.

It is not a de Polignac number, because 16055106661 - 2³ = 16055106653 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16055106661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16055106631) 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, 5330646 + ... + 5333656.

It is an arithmetic number, because the mean of its divisors is an integer number (1098777600).

Almost surely, 2^16055106661 is an apocalyptic number.

16055106661 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

16055106661 is a deficient number, since it is larger than the sum of its proper divisors (1525334939).

16055106661 is a wasteful number, since it uses less digits than its factorization.

16055106661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4680.

The product of its (nonzero) digits is 32400, while the sum is 37.

The spelling of 16055106661 in words is "sixteen billion, fifty-five million, one hundred six thousand, six hundred sixty-one".