11660720005 has 64 divisors (see below), whose sum is σ = 16310004480. Its totient is φ = 7925299200.

The previous prime is 11660719969. The next prime is 11660720023. The reversal of 11660720005 is 50002706611.

11660720005 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11660720005 - 2¹⁵ = 11660687237 is a prime.

It is a super-3 number, since 3×11660720005³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5138011 + ... + 5140279.

It is an arithmetic number, because the mean of its divisors is an integer number (254843820).

Almost surely, 2^11660720005 is an apocalyptic number.

It is an amenable number.

11660720005 is a deficient number, since it is larger than the sum of its proper divisors (4649284475).

11660720005 is a wasteful number, since it uses less digits than its factorization.

11660720005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2422.

The product of its (nonzero) digits is 2520, while the sum is 28.

The spelling of 11660720005 in words is "eleven billion, six hundred sixty million, seven hundred twenty thousand, five".