1165511585120 has 24 divisors (see below), whose sum is σ = 2753521120224. Its totient is φ = 466204633984.

The previous prime is 1165511585113. The next prime is 1165511585123. The reversal of 1165511585120 is 215851155611.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1165511585123) 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 3 ways as a sum of consecutive naturals, for example, 3642223544 + ... + 3642223863.

It is an arithmetic number, because the mean of its divisors is an integer number (114730046676).

Almost surely, 2^{1165511585120} is an apocalyptic number.

1165511585120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1165511585120 is an abundant number, since it is smaller than the sum of its proper divisors (1588009535104).

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

1165511585120 is an equidigital number, since it uses as much as digits as its factorization.

1165511585120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7284447422 (or 7284447414 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 41.

The spelling of 1165511585120 in words is "one trillion, one hundred sixty-five billion, five hundred eleven million, five hundred eighty-five thousand, one hundred twenty".