11520642165615 has 96 divisors (see below), whose sum is σ = 21833001904896. Its totient is φ = 5573334574080.

The previous prime is 11520642165611. The next prime is 11520642165667. The reversal of 11520642165615 is 51656124602511.

11520642165615 is a `hidden beast` number, since 1 + 1 + 5 + 2 + 0 + 6 + 4 + 21 + 6 + 5 + 615 = 666.

It is not a de Polignac number, because 11520642165615 - 2² = 11520642165611 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11520642165611) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 830429319 + ... + 830443191.

It is an arithmetic number, because the mean of its divisors is an integer number (227427103176).

Almost surely, 2^{11520642165615} is an apocalyptic number.

11520642165615 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11520642165615 is a deficient number, since it is larger than the sum of its proper divisors (10312359739281).

11520642165615 is a wasteful number, since it uses less digits than its factorization.

11520642165615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17509 (or 17506 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 45.

The spelling of 11520642165615 in words is "eleven trillion, five hundred twenty billion, six hundred forty-two million, one hundred sixty-five thousand, six hundred fifteen".