2660561611159 has 8 divisors (see below), whose sum is σ = 2663364332448. Its totient is φ = 2657759579520.

The previous prime is 2660561611153. The next prime is 2660561611181. The reversal of 2660561611159 is 9511161650662.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2660561611159 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 (2660561611153) 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, 7737819 + ... + 8074339.

It is an arithmetic number, because the mean of its divisors is an integer number (332920541556).

Almost surely, 2^{2660561611159} is an apocalyptic number.

2660561611159 is a deficient number, since it is larger than the sum of its proper divisors (2802721289).

2660561611159 is a wasteful number, since it uses less digits than its factorization.

2660561611159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344825.

The product of its (nonzero) digits is 583200, while the sum is 49.

The spelling of 2660561611159 in words is "two trillion, six hundred sixty billion, five hundred sixty-one million, six hundred eleven thousand, one hundred fifty-nine".