1115288380161 has 16 divisors (see below), whose sum is σ = 1749471969600. Its totient is φ = 699788787264.

The previous prime is 1115288380159. The next prime is 1115288380169. The reversal of 1115288380161 is 1610838825111.

1115288380161 is a `hidden beast` number, since 111 + 528 + 8 + 3 + 8 + 0 + 1 + 6 + 1 = 666.

It is not a de Polignac number, because 1115288380161 - 2¹ = 1115288380159 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1115288380169) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1214910631 + ... + 1214911548.

It is an arithmetic number, because the mean of its divisors is an integer number (109341998100).

Almost surely, 2^{1115288380161} is an apocalyptic number.

It is an amenable number.

1115288380161 is a deficient number, since it is larger than the sum of its proper divisors (634183589439).

1115288380161 is a wasteful number, since it uses less digits than its factorization.

1115288380161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2429822205 (or 2429822199 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 45.

The spelling of 1115288380161 in words is "one trillion, one hundred fifteen billion, two hundred eighty-eight million, three hundred eighty thousand, one hundred sixty-one".