65550228480 has 440 divisors, whose sum is σ = 256266877680. Its totient is φ = 15889858560.

The previous prime is 65550228427. The next prime is 65550228521. The reversal of 65550228480 is 8482205556.

It is a happy number.

65550228480 is a `hidden beast` number, since 65 + 5 + 502 + 2 + 8 + 4 + 80 = 666.

It is a tau number, because it is divible by the number of its divisors (440).

It is a super-2 number, since 2×65550228480² (a number of 22 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 (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 4554736 + ... + 4569104.

It is an arithmetic number, because the mean of its divisors is an integer number (582424722).

Almost surely, 2^65550228480 is an apocalyptic number.

65550228480 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 65550228480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128133438840).

65550228480 is an abundant number, since it is smaller than the sum of its proper divisors (190716649200).

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

65550228480 is a wasteful number, since it uses less digits than its factorization.

65550228480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14417 (or 14390 counting only the distinct ones).

The product of its (nonzero) digits is 768000, while the sum is 45.

The spelling of 65550228480 in words is "sixty-five billion, five hundred fifty million, two hundred twenty-eight thousand, four hundred eighty".