1161215665712 has 20 divisors (see below), whose sum is σ = 2250227601216. Its totient is φ = 580511768640.

The previous prime is 1161215665711. The next prime is 1161215665721. The reversal of 1161215665712 is 2175665121611.

It is not an unprimeable number, because it can be changed into a prime (1161215665711) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5904239 + ... + 6097742.

Almost surely, 2^{1161215665712} is an apocalyptic number.

It is an amenable number.

1161215665712 is a deficient number, since it is larger than the sum of its proper divisors (1089011935504).

1161215665712 is a wasteful number, since it uses less digits than its factorization.

1161215665712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12008036 (or 12008030 counting only the distinct ones).

The product of its digits is 151200, while the sum is 44.

The spelling of 1161215665712 in words is "one trillion, one hundred sixty-one billion, two hundred fifteen million, six hundred sixty-five thousand, seven hundred twelve".