1165539580896 has 384 divisors, whose sum is σ = 3322395159552. Its totient is φ = 356843520000.

The previous prime is 1165539580867. The next prime is 1165539580901. The reversal of 1165539580896 is 6980859355611.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2906582296 + ... + 2906582696.

It is an arithmetic number, because the mean of its divisors is an integer number (8652070728).

Almost surely, 2^{1165539580896} is an apocalyptic number.

1165539580896 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1165539580896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1661197579776).

1165539580896 is an abundant number, since it is smaller than the sum of its proper divisors (2156855578656).

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

1165539580896 is a wasteful number, since it uses less digits than its factorization.

1165539580896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 906 (or 898 counting only the distinct ones).

The product of its (nonzero) digits is 69984000, while the sum is 66.

The spelling of 1165539580896 in words is "one trillion, one hundred sixty-five billion, five hundred thirty-nine million, five hundred eighty thousand, eight hundred ninety-six".