66489084491200 has 168 divisors, whose sum is σ = 187089020214912. Its totient is φ = 22782576122880.

The previous prime is 66489084491183. The next prime is 66489084491237. The reversal of 66489084491200 is 219448098466.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16889799 + ... + 20451001.

Almost surely, 2^{66489084491200} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66489084491200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93544510107456).

66489084491200 is an abundant number, since it is smaller than the sum of its proper divisors (120599935723712).

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

66489084491200 is a wasteful number, since it uses less digits than its factorization.

66489084491200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3562899 (or 3562884 counting only the distinct ones).

The product of its (nonzero) digits is 23887872, while the sum is 61.

The spelling of 66489084491200 in words is "sixty-six trillion, four hundred eighty-nine billion, eighty-four million, four hundred ninety-one thousand, two hundred".