1066331464521 has 8 divisors (see below), whose sum is σ = 1496605564320. Its totient is φ = 673472503872.

The previous prime is 1066331464519. The next prime is 1066331464589. The reversal of 1066331464521 is 1254641336601.

It is a happy number.

1066331464521 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1066331464521 - 2¹ = 1066331464519 is a prime.

It is a super-2 number, since 2×1066331464521² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1066331463521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9353784720 + ... + 9353784833.

It is an arithmetic number, because the mean of its divisors is an integer number (187075695540).

Almost surely, 2^{1066331464521} is an apocalyptic number.

It is an amenable number.

1066331464521 is a deficient number, since it is larger than the sum of its proper divisors (430274099799).

1066331464521 is a wasteful number, since it uses less digits than its factorization.

1066331464521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18707569575.

The product of its (nonzero) digits is 311040, while the sum is 42.

The spelling of 1066331464521 in words is "one trillion, sixty-six billion, three hundred thirty-one million, four hundred sixty-four thousand, five hundred twenty-one".