16113603513661 has 8 divisors (see below), whose sum is σ = 16633466265344. Its totient is φ = 15593745080160.

The previous prime is 16113603513647. The next prime is 16113603513677. The reversal of 16113603513661 is 16631530631161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16113603513661 - 2⁹ = 16113603513149 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 (16113603513641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7615825 + ... + 9498841.

It is an arithmetic number, because the mean of its divisors is an integer number (2079183283168).

Almost surely, 2^{16113603513661} is an apocalyptic number.

It is an amenable number.

16113603513661 is a deficient number, since it is larger than the sum of its proper divisors (519862751683).

16113603513661 is a wasteful number, since it uses less digits than its factorization.

16113603513661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2159091.

The product of its (nonzero) digits is 174960, while the sum is 43.

The spelling of 16113603513661 in words is "sixteen trillion, one hundred thirteen billion, six hundred three million, five hundred thirteen thousand, six hundred sixty-one".