66198910830480 has 960 divisors, whose sum is σ = 240463484352000. Its totient is φ = 16904675966976.

The previous prime is 66198910830469. The next prime is 66198910830529. The reversal of 66198910830480 is 8403801989166.

66198910830480 is a `hidden beast` number, since 6 + 6 + 19 + 8 + 9 + 108 + 30 + 480 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 78902157901 + ... + 78902158739.

It is an arithmetic number, because the mean of its divisors is an integer number (250482796200).

Almost surely, 2^{66198910830480} is an apocalyptic number.

66198910830480 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 66198910830480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (120231742176000).

66198910830480 is an abundant number, since it is smaller than the sum of its proper divisors (174264573521520).

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

66198910830480 is a wasteful number, since it uses less digits than its factorization.

66198910830480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1878 (or 1860 counting only the distinct ones).

The product of its (nonzero) digits is 17915904, while the sum is 63.

The spelling of 66198910830480 in words is "sixty-six trillion, one hundred ninety-eight billion, nine hundred ten million, eight hundred thirty thousand, four hundred eighty".