64803851280 has 320 divisors, whose sum is σ = 261997754880. Its totient is φ = 14411851776.

The previous prime is 64803851263. The next prime is 64803851293. The reversal of 64803851280 is 8215830846.

64803851280 is a `hidden beast` number, since 6 + 480 + 3 + 85 + 12 + 80 = 666.

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

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, 501522 + ... + 617358.

It is an arithmetic number, because the mean of its divisors is an integer number (818742984).

Almost surely, 2^64803851280 is an apocalyptic number.

64803851280 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 64803851280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130998877440).

64803851280 is an abundant number, since it is smaller than the sum of its proper divisors (197193903600).

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

64803851280 is a wasteful number, since it uses less digits than its factorization.

64803851280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115903 (or 115891 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 45.

The spelling of 64803851280 in words is "sixty-four billion, eight hundred three million, eight hundred fifty-one thousand, two hundred eighty".