1066447939200 has 384 divisors, whose sum is σ = 4082470848000. Its totient is φ = 239627120640.

The previous prime is 1066447939171. The next prime is 1066447939211. The reversal of 1066447939200 is 29397446601.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (384).

It is a super-2 number, since 2×1066447939200² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3830311 + ... + 4099289.

It is an arithmetic number, because the mean of its divisors is an integer number (10631434500).

Almost surely, 2^{1066447939200} is an apocalyptic number.

1066447939200 is a gapful number since it is divisible by the number (10) 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 1066447939200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2041235424000).

1066447939200 is an abundant number, since it is smaller than the sum of its proper divisors (3016022908800).

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

1066447939200 is a wasteful number, since it uses less digits than its factorization.

1066447939200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269072 (or 269055 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 51.

The spelling of 1066447939200 in words is "one trillion, sixty-six billion, four hundred forty-seven million, nine hundred thirty-nine thousand, two hundred".