2665540676687 has 8 divisors (see below), whose sum is σ = 3046358995872. Its totient is φ = 2284729056000.

The previous prime is 2665540676651. The next prime is 2665540676699. The reversal of 2665540676687 is 7866760455662.

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 2665540676687 - 2¹⁸ = 2665540414543 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 (2665540676087) 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, 790814 + ... + 2440587.

It is an arithmetic number, because the mean of its divisors is an integer number (380794874484).

Almost surely, 2^{2665540676687} is an apocalyptic number.

2665540676687 is a deficient number, since it is larger than the sum of its proper divisors (380818319185).

2665540676687 is a wasteful number, since it uses less digits than its factorization.

2665540676687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3349249.

The product of its (nonzero) digits is 609638400, while the sum is 68.

The spelling of 2665540676687 in words is "two trillion, six hundred sixty-five billion, five hundred forty million, six hundred seventy-six thousand, six hundred eighty-seven".