2660661352753 has 4 divisors (see below), whose sum is σ = 2661671861028. Its totient is φ = 2659650844480.

The previous prime is 2660661352733. The next prime is 2660661352813. The reversal of 2660661352753 is 3572531660662.

2660661352753 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 347807421504 + 2312853931249 = 589752^2 + 1520807^2 .

It is a cyclic number.

It is not a de Polignac number, because 2660661352753 - 2²¹ = 2660659255601 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 2660661352753.

It is not an unprimeable number, because it can be changed into a prime (2660661352733) 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 3 ways as a sum of consecutive naturals, for example, 505250188 + ... + 505255453.

It is an arithmetic number, because the mean of its divisors is an integer number (665417965257).

Almost surely, 2^{2660661352753} is an apocalyptic number.

It is an amenable number.

2660661352753 is a deficient number, since it is larger than the sum of its proper divisors (1010508275).

2660661352753 is a wasteful number, since it uses less digits than its factorization.

2660661352753 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1010508274.

The product of its (nonzero) digits is 8164800, while the sum is 52.

The spelling of 2660661352753 in words is "two trillion, six hundred sixty billion, six hundred sixty-one million, three hundred fifty-two thousand, seven hundred fifty-three".