78680844265 has 16 divisors (see below), whose sum is σ = 95093615232. Its totient is φ = 62495207424.

The previous prime is 78680844191. The next prime is 78680844287. The reversal of 78680844265 is 56244808687.

It is a cyclic number.

It is not a de Polignac number, because 78680844265 - 2⁹ = 78680843753 is a prime.

It is a super-3 number, since 3×78680844265³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian 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, 294772 + ... + 494218.

It is an arithmetic number, because the mean of its divisors is an integer number (5943350952).

Almost surely, 2^78680844265 is an apocalyptic number.

It is an amenable number.

78680844265 is a deficient number, since it is larger than the sum of its proper divisors (16412770967).

78680844265 is a wasteful number, since it uses less digits than its factorization.

78680844265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200016.

The product of its (nonzero) digits is 20643840, while the sum is 58.

The spelling of 78680844265 in words is "seventy-eight billion, six hundred eighty million, eight hundred forty-four thousand, two hundred sixty-five".