66704733480 has 256 divisors, whose sum is σ = 249722818560. Its totient is φ = 13847961600.

The previous prime is 66704733451. The next prime is 66704733497. The reversal of 66704733480 is 8433740766.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 12628440 + ... + 12633720.

It is an arithmetic number, because the mean of its divisors is an integer number (975479760).

Almost surely, 2^66704733480 is an apocalyptic number.

66704733480 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 66704733480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124861409280).

66704733480 is an abundant number, since it is smaller than the sum of its proper divisors (183018085080).

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

66704733480 is a wasteful number, since it uses less digits than its factorization.

66704733480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6680 (or 6676 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 48.

The spelling of 66704733480 in words is "sixty-six billion, seven hundred four million, seven hundred thirty-three thousand, four hundred eighty".