2660136666443 has 4 divisors (see below), whose sum is σ = 2751865517040. Its totient is φ = 2568407815848.

The previous prime is 2660136666427. The next prime is 2660136666521. The reversal of 2660136666443 is 3446666310662.

2660136666443 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 is a cyclic number.

It is not a de Polignac number, because 2660136666443 - 2⁴ = 2660136666427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2660136606443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45864425255 + ... + 45864425312.

It is an arithmetic number, because the mean of its divisors is an integer number (687966379260).

Almost surely, 2^{2660136666443} is an apocalyptic number.

2660136666443 is a deficient number, since it is larger than the sum of its proper divisors (91728850597).

2660136666443 is an equidigital number, since it uses as much as digits as its factorization.

2660136666443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91728850596.

The product of its (nonzero) digits is 13436928, while the sum is 53.

The spelling of 2660136666443 in words is "two trillion, six hundred sixty billion, one hundred thirty-six million, six hundred sixty-six thousand, four hundred forty-three".