65728582380 has 120 divisors (see below), whose sum is σ = 206387541360. Its totient is φ = 17511085440.

The previous prime is 65728582363. The next prime is 65728582393. The reversal of 65728582380 is 8328582756.

65728582380 is a `hidden beast` number, since 6 + 5 + 7 + 28 + 582 + 38 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1748826 + ... + 1786014.

It is an arithmetic number, because the mean of its divisors is an integer number (1719896178).

Almost surely, 2^65728582380 is an apocalyptic number.

65728582380 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 65728582380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103193770680).

65728582380 is an abundant number, since it is smaller than the sum of its proper divisors (140658958980).

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

65728582380 is a wasteful number, since it uses less digits than its factorization.

65728582380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38301 (or 38290 counting only the distinct ones).

The product of its (nonzero) digits is 6451200, while the sum is 54.

The spelling of 65728582380 in words is "sixty-five billion, seven hundred twenty-eight million, five hundred eighty-two thousand, three hundred eighty".