678522369146 has 32 divisors (see below), whose sum is σ = 1115037757440. Its totient is φ = 308232158976.

The previous prime is 678522369131. The next prime is 678522369181. The reversal of 678522369146 is 641963225876.

It is a Smith number, since the sum of its digits (59) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5028071 + ... + 5161253.

It is an arithmetic number, because the mean of its divisors is an integer number (34844929920).

Almost surely, 2^678522369146 is an apocalyptic number.

678522369146 is a deficient number, since it is larger than the sum of its proper divisors (436515388294).

678522369146 is a wasteful number, since it uses less digits than its factorization.

678522369146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138398.

The product of its digits is 26127360, while the sum is 59.

The spelling of 678522369146 in words is "six hundred seventy-eight billion, five hundred twenty-two million, three hundred sixty-nine thousand, one hundred forty-six".