6660500520523 has 4 divisors (see below), whose sum is σ = 6661550582128. Its totient is φ = 6659450458920.

The previous prime is 6660500520521. The next prime is 6660500520533. The reversal of 6660500520523 is 3250250050666.

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 6660500520523 - 2¹ = 6660500520521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6660500520521) 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, 525021288 + ... + 525033973.

It is an arithmetic number, because the mean of its divisors is an integer number (1665387645532).

Almost surely, 2^{6660500520523} is an apocalyptic number.

6660500520523 is a deficient number, since it is larger than the sum of its proper divisors (1050061605).

6660500520523 is a wasteful number, since it uses less digits than its factorization.

6660500520523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1050061604.

The product of its (nonzero) digits is 324000, while the sum is 40.

The spelling of 6660500520523 in words is "six trillion, six hundred sixty billion, five hundred million, five hundred twenty thousand, five hundred twenty-three".