667008221880 has 512 divisors, whose sum is σ = 2759322101760. Its totient is φ = 124479037440.

The previous prime is 667008221863. The next prime is 667008221881. The reversal of 667008221880 is 88122800766.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667008221881) by changing a digit.

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 127 ways as a sum of consecutive naturals, for example, 4369402 + ... + 4519478.

It is an arithmetic number, because the mean of its divisors is an integer number (5389300980).

Almost surely, 2^667008221880 is an apocalyptic number.

667008221880 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 667008221880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1379661050880).

667008221880 is an abundant number, since it is smaller than the sum of its proper divisors (2092313879880).

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

667008221880 is a wasteful number, since it uses less digits than its factorization.

667008221880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150159 (or 150155 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 48.

It can be divided in two parts, 667008 and 221880, that added together give a palindrome (888888).

The spelling of 667008221880 in words is "six hundred sixty-seven billion, eight million, two hundred twenty-one thousand, eight hundred eighty".