2666340655403 has 8 divisors (see below), whose sum is σ = 2683435608672. Its totient is φ = 2649259141056.

The previous prime is 2666340655393. The next prime is 2666340655457. The reversal of 2666340655403 is 3045560436662.

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 2666340655403 - 2¹⁶ = 2666340589867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2666340655603) 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, 2961500 + ... + 3755417.

It is an arithmetic number, because the mean of its divisors is an integer number (335429451084).

Almost surely, 2^{2666340655403} is an apocalyptic number.

2666340655403 is a deficient number, since it is larger than the sum of its proper divisors (17094953269).

2666340655403 is a wasteful number, since it uses less digits than its factorization.

2666340655403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6719461.

The product of its (nonzero) digits is 9331200, while the sum is 50.

The spelling of 2666340655403 in words is "two trillion, six hundred sixty-six billion, three hundred forty million, six hundred fifty-five thousand, four hundred three".