11520665120464 has 10 divisors (see below), whose sum is σ = 22321288670930. Its totient is φ = 5760332560224.

The previous prime is 11520665120449. The next prime is 11520665120483. The reversal of 11520665120464 is 46402156602511.

It can be written as a sum of positive squares in only one way, i.e., 5856303200400 + 5664361920064 = 2419980^2 + 2379992^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 11520665120464.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 360020784999 + ... + 360020785030.

It is an arithmetic number, because the mean of its divisors is an integer number (2232128867093).

Almost surely, 2^{11520665120464} is an apocalyptic number.

It is an amenable number.

11520665120464 is a deficient number, since it is larger than the sum of its proper divisors (10800623550466).

11520665120464 is an equidigital number, since it uses as much as digits as its factorization.

11520665120464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 720041570037 (or 720041570031 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 43.

The spelling of 11520665120464 in words is "eleven trillion, five hundred twenty billion, six hundred sixty-five million, one hundred twenty thousand, four hundred sixty-four".