11650661611 has 8 divisors (see below), whose sum is σ = 11883884544. Its totient is φ = 11419649640.

The previous prime is 11650661609. The next prime is 11650661651. The reversal of 11650661611 is 11616605611.

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

It is a cyclic number.

It is not a de Polignac number, because 11650661611 - 2¹ = 11650661609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11650661651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 542095 + ... + 563176.

It is an arithmetic number, because the mean of its divisors is an integer number (1485485568).

Almost surely, 2^11650661611 is an apocalyptic number.

11650661611 is a deficient number, since it is larger than the sum of its proper divisors (233222933).

11650661611 is a wasteful number, since it uses less digits than its factorization.

11650661611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1105481.

The product of its (nonzero) digits is 6480, while the sum is 34.

The spelling of 11650661611 in words is "eleven billion, six hundred fifty million, six hundred sixty-one thousand, six hundred eleven".