78863263661385 has 96 divisors (see below), whose sum is σ = 163020824778240. Its totient is φ = 34483443692544.

The previous prime is 78863263661383. The next prime is 78863263661419. The reversal of 78863263661385 is 58316636236887.

78863263661385 is a `hidden beast` number, since 7 + 88 + 63 + 26 + 36 + 61 + 385 = 666.

It is not a de Polignac number, because 78863263661385 - 2¹ = 78863263661383 is a prime.

It is a hoax number, since the sum of its digits (72) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (78863263661383) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 350813701 + ... + 351038429.

It is an arithmetic number, because the mean of its divisors is an integer number (1698133591440).

Almost surely, 2^{78863263661385} is an apocalyptic number.

It is an amenable number.

78863263661385 is an abundant number, since it is smaller than the sum of its proper divisors (84157561116855).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78863263661385 is a wasteful number, since it uses less digits than its factorization.

78863263661385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273207 (or 273204 counting only the distinct ones).

The product of its digits is 1254113280, while the sum is 72.

The spelling of 78863263661385 in words is "seventy-eight trillion, eight hundred sixty-three billion, two hundred sixty-three million, six hundred sixty-one thousand, three hundred eighty-five".