65396459520 has 1152 divisors, whose sum is σ = 281489644800. Its totient is φ = 13702791168.

The previous prime is 65396459473. The next prime is 65396459543. The reversal of 65396459520 is 2595469356.

It is a happy number.

65396459520 is a `hidden beast` number, since 6 + 5 + 3 + 9 + 64 + 59 + 520 = 666.

It is a tau number, because it is divible by the number of its divisors (1152).

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 95 ways as a sum of consecutive naturals, for example, 734791636 + ... + 734791724.

It is an arithmetic number, because the mean of its divisors is an integer number (244348650).

Almost surely, 2^65396459520 is an apocalyptic number.

65396459520 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 65396459520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (140744822400).

65396459520 is an abundant number, since it is smaller than the sum of its proper divisors (216093185280).

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

65396459520 is a wasteful number, since it uses less digits than its factorization.

65396459520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213 (or 190 counting only the distinct ones).

The product of its (nonzero) digits is 8748000, while the sum is 54.

The spelling of 65396459520 in words is "sixty-five billion, three hundred ninety-six million, four hundred fifty-nine thousand, five hundred twenty".