78785285512365 has 64 divisors (see below), whose sum is σ = 152518399200000. Its totient is φ = 38434636525824.

The previous prime is 78785285512343. The next prime is 78785285512369. The reversal of 78785285512365 is 56321558258787.

78785285512365 is a `hidden beast` number, since 7 + 8 + 7 + 8 + 5 + 2 + 8 + 551 + 2 + 3 + 65 = 666.

It is not a de Polignac number, because 78785285512365 - 2¹⁵ = 78785285479597 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 78785285512293 and 78785285512302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78785285512369) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 529503390 + ... + 529652159.

It is an arithmetic number, because the mean of its divisors is an integer number (2383099987500).

Almost surely, 2^{78785285512365} is an apocalyptic number.

It is an amenable number.

78785285512365 is a deficient number, since it is larger than the sum of its proper divisors (73733113687635).

78785285512365 is a wasteful number, since it uses less digits than its factorization.

78785285512365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1059155611 (or 1059155605 counting only the distinct ones).

The product of its digits is 1128960000, while the sum is 72.

The spelling of 78785285512365 in words is "seventy-eight trillion, seven hundred eighty-five billion, two hundred eighty-five million, five hundred twelve thousand, three hundred sixty-five".