67998686982 has 16 divisors (see below), whose sum is σ = 138563362800. Its totient is φ = 22238564192.

The previous prime is 67998686957. The next prime is 67998686989. The reversal of 67998686982 is 28968689976.

It is a junction number, because it is equal to n+sod(n) for n = 67998686898 and 67998686907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67998686989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 106915857 + ... + 106916492.

It is an arithmetic number, because the mean of its divisors is an integer number (8660210175).

Almost surely, 2^67998686982 is an apocalyptic number.

67998686982 is an abundant number, since it is smaller than the sum of its proper divisors (70564675818).

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

67998686982 is a wasteful number, since it uses less digits than its factorization.

67998686982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213832407.

The product of its digits is 1128701952, while the sum is 78.

The spelling of 67998686982 in words is "sixty-seven billion, nine hundred ninety-eight million, six hundred eighty-six thousand, nine hundred eighty-two".