78688324365 has 16 divisors (see below), whose sum is σ = 143887221888. Its totient is φ = 35971805376.

The previous prime is 78688324331. The next prime is 78688324369. The reversal of 78688324365 is 56342388687.

It is a happy number.

It is not a de Polignac number, because 78688324365 - 2¹⁴ = 78688307981 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 78688324299 and 78688324308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78688324369) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 374706202 + ... + 374706411.

It is an arithmetic number, because the mean of its divisors is an integer number (8992951368).

Almost surely, 2^78688324365 is an apocalyptic number.

It is an amenable number.

78688324365 is a deficient number, since it is larger than the sum of its proper divisors (65198897523).

78688324365 is a wasteful number, since it uses less digits than its factorization.

78688324365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 749412628.

The product of its digits is 46448640, while the sum is 60.

The spelling of 78688324365 in words is "seventy-eight billion, six hundred eighty-eight million, three hundred twenty-four thousand, three hundred sixty-five".