66071400000 has 168 divisors, whose sum is σ = 218505389760. Its totient is φ = 17618880000.

The previous prime is 66071399993. The next prime is 66071400019. The reversal of 66071400000 is 417066.

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 544941 + ... + 655059.

It is an arithmetic number, because the mean of its divisors is an integer number (1300627320).

Almost surely, 2^66071400000 is an apocalyptic number.

66071400000 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 66071400000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109252694880).

66071400000 is an abundant number, since it is smaller than the sum of its proper divisors (152433989760).

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

66071400000 is an equidigital number, since it uses as much as digits as its factorization.

66071400000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110159 (or 110129 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 24.

Adding to 66071400000 its reverse (417066), we get a palindrome (66071817066).

The spelling of 66071400000 in words is "sixty-six billion, seventy-one million, four hundred thousand".