65365558272 has 264 divisors, whose sum is σ = 223149201600. Its totient is φ = 18031362048.

The previous prime is 65365558217. The next prime is 65365558283. The reversal of 65365558272 is 27285556356.

It is a happy number.

65365558272 is a `hidden beast` number, since 6 + 5 + 3 + 6 + 55 + 582 + 7 + 2 = 666.

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 23 ways as a sum of consecutive naturals, for example, 1853379 + ... + 1888317.

Almost surely, 2^65365558272 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65365558272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111574600800).

65365558272 is an abundant number, since it is smaller than the sum of its proper divisors (157783643328).

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

65365558272 is a wasteful number, since it uses less digits than its factorization.

65365558272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35001 (or 34980 counting only the distinct ones).

The product of its digits is 15120000, while the sum is 54.

The spelling of 65365558272 in words is "sixty-five billion, three hundred sixty-five million, five hundred fifty-eight thousand, two hundred seventy-two".