11115206650661 has 8 divisors (see below), whose sum is σ = 11790557962560. Its totient is φ = 10442245963968.

The previous prime is 11115206650651. The next prime is 11115206650673. The reversal of 11115206650661 is 16605660251111.

It is a happy number.

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 11115206650661 - 2²⁶ = 11115139541797 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11115206650621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 597646721 + ... + 597665318.

It is an arithmetic number, because the mean of its divisors is an integer number (1473819745320).

Almost surely, 2^{11115206650661} is an apocalyptic number.

It is an amenable number.

11115206650661 is a deficient number, since it is larger than the sum of its proper divisors (675351311899).

11115206650661 is a wasteful number, since it uses less digits than its factorization.

11115206650661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1195312603.

The product of its (nonzero) digits is 64800, while the sum is 41.

The spelling of 11115206650661 in words is "eleven trillion, one hundred fifteen billion, two hundred six million, six hundred fifty thousand, six hundred sixty-one".