78685255853 has 8 divisors (see below), whose sum is σ = 81009110688. Its totient is φ = 76383854064.

The previous prime is 78685255849. The next prime is 78685255867. The reversal of 78685255853 is 35855258687.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 78685255853 - 2² = 78685255849 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 (78685255153) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5606150 + ... + 5620167.

It is an arithmetic number, because the mean of its divisors is an integer number (10126138836).

Almost surely, 2^78685255853 is an apocalyptic number.

It is an amenable number.

78685255853 is a deficient number, since it is larger than the sum of its proper divisors (2323854835).

78685255853 is a wasteful number, since it uses less digits than its factorization.

78685255853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11226523.

The product of its digits is 80640000, while the sum is 62.

The spelling of 78685255853 in words is "seventy-eight billion, six hundred eighty-five million, two hundred fifty-five thousand, eight hundred fifty-three".