2660136666445 has 8 divisors (see below), whose sum is σ = 3239808238944. Its totient is φ = 2096346507024.

The previous prime is 2660136666427. The next prime is 2660136666521. The reversal of 2660136666445 is 5446666310662.

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 2660136666445 - 2²³ = 2660128277837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3970352899 + ... + 3970353568.

It is an arithmetic number, because the mean of its divisors is an integer number (404976029868).

Almost surely, 2^{2660136666445} is an apocalyptic number.

It is an amenable number.

2660136666445 is a deficient number, since it is larger than the sum of its proper divisors (579671572499).

2660136666445 is an equidigital number, since it uses as much as digits as its factorization.

2660136666445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7940706539.

The product of its (nonzero) digits is 22394880, while the sum is 55.

The spelling of 2660136666445 in words is "two trillion, six hundred sixty billion, one hundred thirty-six million, six hundred sixty-six thousand, four hundred forty-five".