65669350320 has 480 divisors, whose sum is σ = 276765285888. Its totient is φ = 14126690304.

The previous prime is 65669350301. The next prime is 65669350339. The reversal of 65669350320 is 2305396656.

65669350320 is a `hidden beast` number, since 6 + 56 + 6 + 93 + 503 + 2 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (65669350301) and next prime (65669350339).

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

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, 2299167 + ... + 2327553.

Almost surely, 2^65669350320 is an apocalyptic number.

65669350320 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 65669350320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (138382642944).

65669350320 is an abundant number, since it is smaller than the sum of its proper divisors (211095935568).

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

65669350320 is a wasteful number, since it uses less digits than its factorization.

65669350320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28439 (or 28421 counting only the distinct ones).

The product of its (nonzero) digits is 874800, while the sum is 45.

The spelling of 65669350320 in words is "sixty-five billion, six hundred sixty-nine million, three hundred fifty thousand, three hundred twenty".