11515330456161 has 16 divisors (see below), whose sum is σ = 17596878927744. Its totient is φ = 6561548066304.

The previous prime is 11515330456159. The next prime is 11515330456181. The reversal of 11515330456161 is 16165403351511.

It is not a de Polignac number, because 11515330456161 - 2¹ = 11515330456159 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11515330456181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 776690986 + ... + 776705811.

It is an arithmetic number, because the mean of its divisors is an integer number (1099804932984).

Almost surely, 2^{11515330456161} is an apocalyptic number.

It is an amenable number.

11515330456161 is a deficient number, since it is larger than the sum of its proper divisors (6081548471583).

11515330456161 is a wasteful number, since it uses less digits than its factorization.

11515330456161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1553397160.

The product of its (nonzero) digits is 162000, while the sum is 42.

The spelling of 11515330456161 in words is "eleven trillion, five hundred fifteen billion, three hundred thirty million, four hundred fifty-six thousand, one hundred sixty-one".