678388684383 has 28 divisors (see below), whose sum is σ = 1017231421248. Its totient is φ = 452208575520.

The previous prime is 678388684373. The next prime is 678388684409. The reversal of 678388684383 is 383486883876.

678388684383 is a `hidden beast` number, since 6 + 78 + 388 + 68 + 43 + 83 = 666.

It is not a de Polignac number, because 678388684383 - 2³⁰ = 677314942559 is a prime.

It is a super-2 number, since 2×678388684383² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678388684373) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 7160563 + ... + 7254683.

It is an arithmetic number, because the mean of its divisors is an integer number (36329693616).

Almost surely, 2^678388684383 is an apocalyptic number.

678388684383 is a deficient number, since it is larger than the sum of its proper divisors (338842736865).

678388684383 is an frugal number, since it uses more digits than its factorization.

678388684383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104026 (or 104011 counting only the distinct ones).

The product of its digits is 891813888, while the sum is 72.

The spelling of 678388684383 in words is "six hundred seventy-eight billion, three hundred eighty-eight million, six hundred eighty-four thousand, three hundred eighty-three".