11660665090 has 8 divisors (see below), whose sum is σ = 20989197180. Its totient is φ = 4664266032.

The previous prime is 11660665087. The next prime is 11660665091. The reversal of 11660665090 is 9056606611.

11660665090 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 10751823481 + 908841609 = 103691^2 + 30147^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×11660665090² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11660665091) 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, 583033245 + ... + 583033264.

Almost surely, 2^11660665090 is an apocalyptic number.

11660665090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11660665090 is a deficient number, since it is larger than the sum of its proper divisors (9328532090).

11660665090 is a wasteful number, since it uses less digits than its factorization.

11660665090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1166066516.

The product of its (nonzero) digits is 58320, while the sum is 40.

The spelling of 11660665090 in words is "eleven billion, six hundred sixty million, six hundred sixty-five thousand, ninety".