66801284848320 has 224 divisors, whose sum is σ = 243553010561280. Its totient is φ = 15341921832960.

The previous prime is 66801284848313. The next prime is 66801284848379. The reversal of 66801284848320 is 2384848210866.

It is a Harshad number since it is a multiple of its sum of digits (60).

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, 166269867 + ... + 166671146.

It is an arithmetic number, because the mean of its divisors is an integer number (1087290225720).

Almost surely, 2^{66801284848320} is an apocalyptic number.

66801284848320 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

66801284848320 is an abundant number, since it is smaller than the sum of its proper divisors (176751725712960).

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

66801284848320 is a wasteful number, since it uses less digits than its factorization.

66801284848320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332941063 (or 332941053 counting only the distinct ones).

The product of its (nonzero) digits is 28311552, while the sum is 60.

The spelling of 66801284848320 in words is "sixty-six trillion, eight hundred one billion, two hundred eighty-four million, eight hundred forty-eight thousand, three hundred twenty".