2660240260621 has 8 divisors (see below), whose sum is σ = 2939191285824. Its totient is φ = 2394896602560.

The previous prime is 2660240260607. The next prime is 2660240260627. The reversal of 2660240260621 is 1260620420662.

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 2660240260621 - 2¹¹ = 2660240258573 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 (2660240260627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3401841375 + ... + 3401842156.

It is an arithmetic number, because the mean of its divisors is an integer number (367398910728).

Almost surely, 2^{2660240260621} is an apocalyptic number.

It is an amenable number.

2660240260621 is a deficient number, since it is larger than the sum of its proper divisors (278951025203).

2660240260621 is a wasteful number, since it uses less digits than its factorization.

2660240260621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6803683571.

The product of its (nonzero) digits is 82944, while the sum is 37.

The spelling of 2660240260621 in words is "two trillion, six hundred sixty billion, two hundred forty million, two hundred sixty thousand, six hundred twenty-one".