1666672003518 has 16 divisors (see below), whose sum is σ = 3333370217616. Its totient is φ = 555552966080.

The previous prime is 1666672003501. The next prime is 1666672003537. The reversal of 1666672003518 is 8153002766661.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 210753 + ... + 1837868.

It is an arithmetic number, because the mean of its divisors is an integer number (208335638601).

Almost surely, 2^{1666672003518} is an apocalyptic number.

1666672003518 is an abundant number, since it is smaller than the sum of its proper divisors (1666698214098).

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

1666672003518 is a wasteful number, since it uses less digits than its factorization.

1666672003518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2184219.

The product of its (nonzero) digits is 2177280, while the sum is 51.

The spelling of 1666672003518 in words is "one trillion, six hundred sixty-six billion, six hundred seventy-two million, three thousand, five hundred eighteen".