1165969385584 has 80 divisors (see below), whose sum is σ = 2374023767040. Its totient is φ = 554017559040.

The previous prime is 1165969385561. The next prime is 1165969385593. The reversal of 1165969385584 is 4855839695611.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27691972 + ... + 27734044.

It is an arithmetic number, because the mean of its divisors is an integer number (29675297088).

Almost surely, 2^{1165969385584} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1165969385584, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1187011883520).

1165969385584 is an abundant number, since it is smaller than the sum of its proper divisors (1208054381456).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1165969385584 is a wasteful number, since it uses less digits than its factorization.

1165969385584 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43118 (or 43112 counting only the distinct ones).

The product of its digits is 279936000, while the sum is 70.

The spelling of 1165969385584 in words is "one trillion, one hundred sixty-five billion, nine hundred sixty-nine million, three hundred eighty-five thousand, five hundred eighty-four".