11520655202661 has 32 divisors (see below), whose sum is σ = 17015516698752. Its totient is φ = 6874954536960.

The previous prime is 11520655202659. The next prime is 11520655202671. The reversal of 11520655202661 is 16620255602511.

It is not a de Polignac number, because 11520655202661 - 2¹ = 11520655202659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11520655202621) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2603790 + ... + 5460863.

It is an arithmetic number, because the mean of its divisors is an integer number (531734896836).

Almost surely, 2^{11520655202661} is an apocalyptic number.

11520655202661 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11520655202661 is a deficient number, since it is larger than the sum of its proper divisors (5494861496091).

11520655202661 is a wasteful number, since it uses less digits than its factorization.

11520655202661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8065333.

The product of its (nonzero) digits is 216000, while the sum is 42.

The spelling of 11520655202661 in words is "eleven trillion, five hundred twenty billion, six hundred fifty-five million, two hundred two thousand, six hundred sixty-one".