65984990168256 has 56 divisors (see below), whose sum is σ = 175741480514304. Its totient is φ = 21849334483200.

The previous prime is 65984990168219. The next prime is 65984990168323. The reversal of 65984990168256 is 65286109948956.

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 7 ways as a sum of consecutive naturals, for example, 1137957180 + ... + 1138015163.

Almost surely, 2^{65984990168256} is an apocalyptic number.

It is an amenable number.

65984990168256 is an abundant number, since it is smaller than the sum of its proper divisors (109756490346048).

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

65984990168256 is a wasteful number, since it uses less digits than its factorization.

65984990168256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2275972509 (or 2275972499 counting only the distinct ones).

The product of its (nonzero) digits is 2015539200, while the sum is 78.

The spelling of 65984990168256 in words is "sixty-five trillion, nine hundred eighty-four billion, nine hundred ninety million, one hundred sixty-eight thousand, two hundred fifty-six".