1066521504012 has 24 divisors (see below), whose sum is σ = 2488571500800. Its totient is φ = 355504121616.

The previous prime is 1066521504011. The next prime is 1066521504029. The reversal of 1066521504012 is 2104051256601.

It is a super-2 number, since 2×1066521504012² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1066521504011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1417689 + ... + 2035407.

It is an arithmetic number, because the mean of its divisors is an integer number (103690479200).

Almost surely, 2^{1066521504012} is an apocalyptic number.

1066521504012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1066521504012 is an abundant number, since it is smaller than the sum of its proper divisors (1422049996788).

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

1066521504012 is a wasteful number, since it uses less digits than its factorization.

1066521504012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 761605 (or 761603 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 33.

The spelling of 1066521504012 in words is "one trillion, sixty-six billion, five hundred twenty-one million, five hundred four thousand, twelve".