1065801784320 has 1760 divisors, whose sum is σ = 4857550258176. Its totient is φ = 217379635200.

The previous prime is 1065801784309. The next prime is 1065801784331. The reversal of 1065801784320 is 234871085601.

1065801784320 is a `hidden beast` number, since 1 + 0 + 6 + 580 + 1 + 7 + 8 + 43 + 20 = 666.

It is an interprime number because it is at equal distance from previous prime (1065801784309) and next prime (1065801784331).

It is a super-2 number, since 2×1065801784320² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 1169924665 + ... + 1169925575.

Almost surely, 2^{1065801784320} is an apocalyptic number.

1065801784320 is a gapful number since it is divisible by the number (10) 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 1065801784320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2428775129088).

1065801784320 is an abundant number, since it is smaller than the sum of its proper divisors (3791748473856).

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

1065801784320 is a wasteful number, since it uses less digits than its factorization.

1065801784320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 999 (or 972 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The spelling of 1065801784320 in words is "one trillion, sixty-five billion, eight hundred one million, seven hundred eighty-four thousand, three hundred twenty".