66305258160 has 80 divisors (see below), whose sum is σ = 205780266720. Its totient is φ = 17661276160.

The previous prime is 66305258143. The next prime is 66305258197. The reversal of 66305258160 is 6185250366.

It is a happy number.

66305258160 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54646 + ... + 368234.

It is an arithmetic number, because the mean of its divisors is an integer number (2572253334).

Almost surely, 2^66305258160 is an apocalyptic number.

66305258160 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

66305258160 is an abundant number, since it is smaller than the sum of its proper divisors (139475008560).

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

66305258160 is a wasteful number, since it uses less digits than its factorization.

66305258160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314486 (or 314480 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 42.

The spelling of 66305258160 in words is "sixty-six billion, three hundred five million, two hundred fifty-eight thousand, one hundred sixty".