66249634057308 has 144 divisors (see below), whose sum is σ = 182202766200000. Its totient is φ = 20175632225280.

The previous prime is 66249634057237. The next prime is 66249634057331. The reversal of 66249634057308 is 80375043694266.

66249634057308 is a `hidden beast` number, since 6 + 6 + 24 + 9 + 6 + 34 + 0 + 573 + 0 + 8 = 666.

66249634057308 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 17904193 + ... + 21285191.

It is an arithmetic number, because the mean of its divisors is an integer number (1265296987500).

Almost surely, 2^{66249634057308} 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 66249634057308, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91101383100000).

66249634057308 is an abundant number, since it is smaller than the sum of its proper divisors (115953132142692).

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

66249634057308 is a wasteful number, since it uses less digits than its factorization.

66249634057308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3381452 (or 3381447 counting only the distinct ones).

The product of its (nonzero) digits is 156764160, while the sum is 63.

The spelling of 66249634057308 in words is "sixty-six trillion, two hundred forty-nine billion, six hundred thirty-four million, fifty-seven thousand, three hundred eight".