3668378738663 has 4 divisors (see below), whose sum is σ = 3671185456680. Its totient is φ = 3665572020648.

The previous prime is 3668378738623. The next prime is 3668378738707.

3668378738663 is nontrivially palindromic in base 10.

3668378738663 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3668378738663 - 2⁶ = 3668378738599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3668378738623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1403357048 + ... + 1403359661.

It is an arithmetic number, because the mean of its divisors is an integer number (917796364170).

Almost surely, 2^{3668378738663} is an apocalyptic number.

3668378738663 is a deficient number, since it is larger than the sum of its proper divisors (2806718017).

3668378738663 is a wasteful number, since it uses less digits than its factorization.

3668378738663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2806718016.

The product of its digits is 2633637888, while the sum is 74.

The spelling of 3668378738663 in words is "three trillion, six hundred sixty-eight billion, three hundred seventy-eight million, seven hundred thirty-eight thousand, six hundred sixty-three".