1668403550675 has 48 divisors (see below), whose sum is σ = 2103401332032. Its totient is φ = 1312613683200.

The previous prime is 1668403550669. The next prime is 1668403550731. The reversal of 1668403550675 is 5760553048661.

It is not a de Polignac number, because 1668403550675 - 2¹⁶ = 1668403485139 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1668403550675.

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, 399424187 + ... + 399428363.

It is an arithmetic number, because the mean of its divisors is an integer number (43820861084).

Almost surely, 2^{1668403550675} is an apocalyptic number.

1668403550675 is a deficient number, since it is larger than the sum of its proper divisors (434997781357).

1668403550675 is a wasteful number, since it uses less digits than its factorization.

1668403550675 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5328 (or 5323 counting only the distinct ones).

The product of its (nonzero) digits is 18144000, while the sum is 56.

The spelling of 1668403550675 in words is "one trillion, six hundred sixty-eight billion, four hundred three million, five hundred fifty thousand, six hundred seventy-five".