678605213136 has 20 divisors (see below), whose sum is σ = 1753063467392. Its totient is φ = 226201737696.

The previous prime is 678605213129. The next prime is 678605213141. The reversal of 678605213136 is 631312506876.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (48), and also a Moran number because the ratio is a prime number: 14137608607 = 678605213136 / (6 + 7 + 8 + 6 + 0 + 5 + 2 + 1 + 3 + 1 + 3 + 6).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7068804256 + ... + 7068804351.

Almost surely, 2^678605213136 is an apocalyptic number.

It is an amenable number.

678605213136 is an abundant number, since it is smaller than the sum of its proper divisors (1074458254256).

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

678605213136 is a wasteful number, since it uses less digits than its factorization.

678605213136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14137608618 (or 14137608612 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 48.

The spelling of 678605213136 in words is "six hundred seventy-eight billion, six hundred five million, two hundred thirteen thousand, one hundred thirty-six".