16282505661 has 16 divisors (see below), whose sum is σ = 22083171264. Its totient is φ = 10669750784.

The previous prime is 16282505597. The next prime is 16282505683. The reversal of 16282505661 is 16650528261.

It is a cyclic number.

It is not a de Polignac number, because 16282505661 - 2⁶ = 16282505597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16282501661) 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, 116916 + ... + 215021.

It is an arithmetic number, because the mean of its divisors is an integer number (1380198204).

Almost surely, 2^16282505661 is an apocalyptic number.

It is an amenable number.

16282505661 is a deficient number, since it is larger than the sum of its proper divisors (5800665603).

16282505661 is a wasteful number, since it uses less digits than its factorization.

16282505661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332220.

The product of its (nonzero) digits is 172800, while the sum is 42.

The spelling of 16282505661 in words is "sixteen billion, two hundred eighty-two million, five hundred five thousand, six hundred sixty-one".