2666500005 has 32 divisors (see below), whose sum is σ = 4609463040. Its totient is φ = 1308487680.

The previous prime is 2666499991. The next prime is 2666500019. The reversal of 2666500005 is 5000056662.

It is an interprime number because it is at equal distance from previous prime (2666499991) and next prime (2666500019).

It is not a de Polignac number, because 2666500005 - 2⁵ = 2666499973 is a prime.

It is a super-2 number, since 2×2666500005² = 14220444553330000050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38661 + ... + 82629.

It is an arithmetic number, because the mean of its divisors is an integer number (144045720).

Almost surely, 2^2666500005 is an apocalyptic number.

It is an amenable number.

2666500005 is a deficient number, since it is larger than the sum of its proper divisors (1942963035).

2666500005 is a wasteful number, since it uses less digits than its factorization.

2666500005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44301.

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 2666500005 is about 51638.1642295696. The cubic root of 2666500005 is about 1386.6936589130.

Adding to 2666500005 its reverse (5000056662), we get a palindrome (7666556667).

The spelling of 2666500005 in words is "two billion, six hundred sixty-six million, five hundred thousand, five".