65855634336 has 48 divisors (see below), whose sum is σ = 192078936000. Its totient is φ = 21951877824.

The previous prime is 65855634277. The next prime is 65855634337. The reversal of 65855634336 is 63343655856.

65855634336 is a `hidden beast` number, since 6 + 5 + 8 + 5 + 563 + 43 + 36 = 666.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (65855634337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38110036 + ... + 38111763.

It is an arithmetic number, because the mean of its divisors is an integer number (4001644500).

Almost surely, 2^65855634336 is an apocalyptic number.

It is an amenable number.

65855634336 is an abundant number, since it is smaller than the sum of its proper divisors (126223301664).

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

65855634336 is a wasteful number, since it uses less digits than its factorization.

65855634336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76221818 (or 76221804 counting only the distinct ones).

The product of its digits is 23328000, while the sum is 54.

The spelling of 65855634336 in words is "sixty-five billion, eight hundred fifty-five million, six hundred thirty-four thousand, three hundred thirty-six".