66730404480 has 256 divisors, whose sum is σ = 219290664960. Its totient is φ = 17250897920.

The previous prime is 66730404479. The next prime is 66730404497. The reversal of 66730404480 is 8440403766.

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, 9652225 + ... + 9659135.

It is an arithmetic number, because the mean of its divisors is an integer number (856604160).

Almost surely, 2^66730404480 is an apocalyptic number.

66730404480 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 66730404480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109645332480).

66730404480 is an abundant number, since it is smaller than the sum of its proper divisors (152560260480).

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

66730404480 is a wasteful number, since it uses less digits than its factorization.

66730404480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7087 (or 7075 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 42.

The spelling of 66730404480 in words is "sixty-six billion, seven hundred thirty million, four hundred four thousand, four hundred eighty".