11520311465661 has 8 divisors (see below), whose sum is σ = 16263969128064. Its totient is φ = 7228430723520.

The previous prime is 11520311465603. The next prime is 11520311465693. The reversal of 11520311465661 is 16656411302511.

It is a happy number.

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

It is not a de Polignac number, because 11520311465661 - 2⁹ = 11520311465149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11520311465561) 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, 112944230005 + ... + 112944230106.

It is an arithmetic number, because the mean of its divisors is an integer number (2032996141008).

Almost surely, 2^{11520311465661} is an apocalyptic number.

It is an amenable number.

11520311465661 is a deficient number, since it is larger than the sum of its proper divisors (4743657662403).

11520311465661 is a wasteful number, since it uses less digits than its factorization.

11520311465661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225888460131.

The product of its (nonzero) digits is 129600, while the sum is 42.

The spelling of 11520311465661 in words is "eleven trillion, five hundred twenty billion, three hundred eleven million, four hundred sixty-five thousand, six hundred sixty-one".