668078854365 has 16 divisors (see below), whose sum is σ = 1151151257088. Its totient is φ = 328900358976.

The previous prime is 668078854337. The next prime is 668078854393. The reversal of 668078854365 is 563458870866.

668078854365 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (668078854337) and next prime (668078854393).

It is not a de Polignac number, because 668078854365 - 2⁷ = 668078854237 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 668078854296 and 668078854305.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1713022509 + ... + 1713022898.

It is an arithmetic number, because the mean of its divisors is an integer number (71946953568).

Almost surely, 2^668078854365 is an apocalyptic number.

668078854365 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

668078854365 is a deficient number, since it is larger than the sum of its proper divisors (483072402723).

668078854365 is a wasteful number, since it uses less digits than its factorization.

668078854365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3426045428.

The product of its (nonzero) digits is 232243200, while the sum is 66.

The spelling of 668078854365 in words is "six hundred sixty-eight billion, seventy-eight million, eight hundred fifty-four thousand, three hundred sixty-five".