66008214276840 has 576 divisors, whose sum is σ = 245613723526080. Its totient is φ = 15931433548800.

The previous prime is 66008214276833. The next prime is 66008214276887. The reversal of 66008214276840 is 4867241280066.

It is a happy number.

66008214276840 is a `hidden beast` number, since 6 + 60 + 0 + 82 + 1 + 427 + 6 + 84 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

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 143 ways as a sum of consecutive naturals, for example, 266855620 + ... + 267102860.

It is an arithmetic number, because the mean of its divisors is an integer number (426412714455).

Almost surely, 2^{66008214276840} is an apocalyptic number.

66008214276840 is a gapful number since it is divisible by the number (60) 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 66008214276840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122806861763040).

66008214276840 is an abundant number, since it is smaller than the sum of its proper divisors (179605509249240).

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

66008214276840 is a wasteful number, since it uses less digits than its factorization.

66008214276840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247516 (or 247489 counting only the distinct ones).

The product of its (nonzero) digits is 6193152, while the sum is 54.

The spelling of 66008214276840 in words is "sixty-six trillion, eight billion, two hundred fourteen million, two hundred seventy-six thousand, eight hundred forty".