678523982636 has 6 divisors (see below), whose sum is σ = 1187416969620. Its totient is φ = 339261991316.

The previous prime is 678523982627. The next prime is 678523982641. The reversal of 678523982636 is 636289325876.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84815497826 + ... + 84815497833.

It is an arithmetic number, because the mean of its divisors is an integer number (197902828270).

Almost surely, 2^678523982636 is an apocalyptic number.

It is an amenable number.

678523982636 is a deficient number, since it is larger than the sum of its proper divisors (508892986984).

678523982636 is a wasteful number, since it uses less digits than its factorization.

678523982636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169630995663 (or 169630995661 counting only the distinct ones).

The product of its digits is 156764160, while the sum is 65.

The spelling of 678523982636 in words is "six hundred seventy-eight billion, five hundred twenty-three million, nine hundred eighty-two thousand, six hundred thirty-six".