668960071403 has 4 divisors (see below), whose sum is σ = 720418538448. Its totient is φ = 617501604360.

The previous prime is 668960071379. The next prime is 668960071487. The reversal of 668960071403 is 304170069866.

668960071403 is digitally balanced in base 2, 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 668960071403 - 2⁸ = 668960071147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (668960073403) 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, 25729233503 + ... + 25729233528.

It is an arithmetic number, because the mean of its divisors is an integer number (180104634612).

Almost surely, 2^668960071403 is an apocalyptic number.

668960071403 is a deficient number, since it is larger than the sum of its proper divisors (51458467045).

668960071403 is a wasteful number, since it uses less digits than its factorization.

668960071403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51458467044.

The product of its (nonzero) digits is 1306368, while the sum is 50.

The spelling of 668960071403 in words is "six hundred sixty-eight billion, nine hundred sixty million, seventy-one thousand, four hundred three".