1666683333513 has 48 divisors (see below), whose sum is σ = 2780959588992. Its totient is φ = 950630208000.

The previous prime is 1666683333421. The next prime is 1666683333521. The reversal of 1666683333513 is 3153333866661.

It is a happy number.

It is not a de Polignac number, because 1666683333513 - 2¹⁴ = 1666683317129 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1666683333513.

It is not an unprimeable number, because it can be changed into a prime (1666683333563) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 40490923 + ... + 40532063.

It is an arithmetic number, because the mean of its divisors is an integer number (57936658104).

Almost surely, 2^{1666683333513} is an apocalyptic number.

It is an amenable number.

1666683333513 is a deficient number, since it is larger than the sum of its proper divisors (1114276255479).

1666683333513 is a wasteful number, since it uses less digits than its factorization.

1666683333513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65246 (or 65243 counting only the distinct ones).

The product of its digits is 12597120, while the sum is 54.

The spelling of 1666683333513 in words is "one trillion, six hundred sixty-six billion, six hundred eighty-three million, three hundred thirty-three thousand, five hundred thirteen".