1668686703714 has 12 divisors (see below), whose sum is σ = 3615487858086. Its totient is φ = 556228901232.

The previous prime is 1668686703707. The next prime is 1668686703743. The reversal of 1668686703714 is 4173076868661.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1303124987025 + 365561716689 = 1141545^2 + 604617^2 .

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 46352408419 + ... + 46352408454.

Almost surely, 2^{1668686703714} is an apocalyptic number.

1668686703714 is an abundant number, since it is smaller than the sum of its proper divisors (1946801154372).

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

1668686703714 is a wasteful number, since it uses less digits than its factorization.

1668686703714 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92704816881 (or 92704816878 counting only the distinct ones).

The product of its (nonzero) digits is 48771072, while the sum is 63.

The spelling of 1668686703714 in words is "one trillion, six hundred sixty-eight billion, six hundred eighty-six million, seven hundred three thousand, seven hundred fourteen".