2666416523 has 4 divisors (see below), whose sum is σ = 2681148288. Its totient is φ = 2651684760.

The previous prime is 2666416483. The next prime is 2666416579. The reversal of 2666416523 is 3256146662.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2666416523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2666413523) 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, 7365611 + ... + 7365972.

It is an arithmetic number, because the mean of its divisors is an integer number (670287072).

Almost surely, 2^2666416523 is an apocalyptic number.

2666416523 is a deficient number, since it is larger than the sum of its proper divisors (14731765).

2666416523 is a wasteful number, since it uses less digits than its factorization.

2666416523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14731764.

The product of its digits is 311040, while the sum is 41.

The square root of 2666416523 is about 51637.3558869933. The cubic root of 2666416523 is about 1386.6791873625.

The spelling of 2666416523 in words is "two billion, six hundred sixty-six million, four hundred sixteen thousand, five hundred twenty-three".