65786533380 has 144 divisors (see below), whose sum is σ = 208553304960. Its totient is φ = 16754174976.

The previous prime is 65786533361. The next prime is 65786533441. The reversal of 65786533380 is 8333568756.

It is a happy number.

65786533380 is a `hidden beast` number, since 6 + 5 + 78 + 6 + 533 + 38 + 0 = 666.

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 47 ways as a sum of consecutive naturals, for example, 2716204 + ... + 2740316.

It is an arithmetic number, because the mean of its divisors is an integer number (1448286840).

Almost surely, 2^65786533380 is an apocalyptic number.

65786533380 is a gapful number since it is divisible by the number (60) 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 65786533380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104276652480).

65786533380 is an abundant number, since it is smaller than the sum of its proper divisors (142766771580).

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

65786533380 is a wasteful number, since it uses less digits than its factorization.

65786533380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24810 (or 24805 counting only the distinct ones).

The product of its (nonzero) digits is 10886400, while the sum is 54.

The spelling of 65786533380 in words is "sixty-five billion, seven hundred eighty-six million, five hundred thirty-three thousand, three hundred eighty".