65640054152 has 64 divisors (see below), whose sum is σ = 132342724800. Its totient is φ = 30410311680.

The previous prime is 65640054143. The next prime is 65640054199. The reversal of 65640054152 is 25145004656.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 5663099 + ... + 5674677.

It is an arithmetic number, because the mean of its divisors is an integer number (2067855075).

Almost surely, 2^65640054152 is an apocalyptic number.

It is an amenable number.

65640054152 is an abundant number, since it is smaller than the sum of its proper divisors (66702670648).

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

65640054152 is a wasteful number, since it uses less digits than its factorization.

65640054152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12246 (or 12242 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 38.

The spelling of 65640054152 in words is "sixty-five billion, six hundred forty million, fifty-four thousand, one hundred fifty-two".