11520665121055 has 8 divisors (see below), whose sum is σ = 14552419100400. Its totient is φ = 8731451460096.

The previous prime is 11520665121041. The next prime is 11520665121071. The reversal of 11520665121055 is 55012156602511.

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 11520665121055 - 2⁷ = 11520665120927 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11520665120999 and 11520665121017.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60635079490 + ... + 60635079679.

It is an arithmetic number, because the mean of its divisors is an integer number (1819052387550).

Almost surely, 2^{11520665121055} is an apocalyptic number.

11520665121055 is a deficient number, since it is larger than the sum of its proper divisors (3031753979345).

11520665121055 is a wasteful number, since it uses less digits than its factorization.

11520665121055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121270159193.

The product of its (nonzero) digits is 90000, while the sum is 40.

The spelling of 11520665121055 in words is "eleven trillion, five hundred twenty billion, six hundred sixty-five million, one hundred twenty-one thousand, fifty-five".