678328486155 has 20 divisors (see below), whose sum is σ = 1215966620352. Its totient is φ = 361775192400.

The previous prime is 678328486153. The next prime is 678328486193. The reversal of 678328486155 is 551684823876.

678328486155 is a `hidden beast` number, since 6 + 7 + 8 + 3 + 2 + 8 + 4 + 8 + 615 + 5 = 666.

It is not a de Polignac number, because 678328486155 - 2¹ = 678328486153 is a prime.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 678328486092 and 678328486101.

It is not an unprimeable number, because it can be changed into a prime (678328486153) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 837442171 + ... + 837442980.

Almost surely, 2^678328486155 is an apocalyptic number.

678328486155 is a deficient number, since it is larger than the sum of its proper divisors (537638134197).

678328486155 is a wasteful number, since it uses less digits than its factorization.

678328486155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1674885168 (or 1674885159 counting only the distinct ones).

The product of its digits is 77414400, while the sum is 63.

The spelling of 678328486155 in words is "six hundred seventy-eight billion, three hundred twenty-eight million, four hundred eighty-six thousand, one hundred fifty-five".