66547393248 has 192 divisors, whose sum is σ = 215885150208. Its totient is φ = 17514209280.

The previous prime is 66547393219. The next prime is 66547393301. The reversal of 66547393248 is 84239374566.

66547393248 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 polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 474958 + ... + 598898.

It is an arithmetic number, because the mean of its divisors is an integer number (1124401824).

Almost surely, 2^66547393248 is an apocalyptic number.

66547393248 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66547393248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107942575104).

66547393248 is an abundant number, since it is smaller than the sum of its proper divisors (149337756960).

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

66547393248 is a wasteful number, since it uses less digits than its factorization.

66547393248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124025 (or 124017 counting only the distinct ones).

The product of its digits is 26127360, while the sum is 57.

The spelling of 66547393248 in words is "sixty-six billion, five hundred forty-seven million, three hundred ninety-three thousand, two hundred forty-eight".