65428425216 has 600 divisors, whose sum is σ = 247906650816. Its totient is φ = 16988590080.

The previous prime is 65428425199. The next prime is 65428425247. The reversal of 65428425216 is 61252482456.

65428425216 is a `hidden beast` number, since 6 + 5 + 4 + 2 + 8 + 425 + 216 = 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 59 ways as a sum of consecutive naturals, for example, 22351945 + ... + 22354871.

Almost surely, 2^65428425216 is an apocalyptic number.

65428425216 is a gapful number since it is divisible by the number (66) 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 65428425216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (123953325408).

65428425216 is an abundant number, since it is smaller than the sum of its proper divisors (182478225600).

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

65428425216 is a wasteful number, since it uses less digits than its factorization.

65428425216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2982 (or 2950 counting only the distinct ones).

The product of its digits is 921600, while the sum is 45.

The spelling of 65428425216 in words is "sixty-five billion, four hundred twenty-eight million, four hundred twenty-five thousand, two hundred sixteen".