68549830636 has 12 divisors (see below), whose sum is σ = 137099661328. Its totient is φ = 29378498832.

The previous prime is 68549830633. The next prime is 68549830639. The reversal of 68549830636 is 63603894586.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (68549830633) and next prime (68549830639).

68549830636 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (68549830633) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1224104091 + ... + 1224104146.

Almost surely, 2^68549830636 is an apocalyptic number.

It is an amenable number.

68549830636 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

68549830636 is a wasteful number, since it uses less digits than its factorization.

68549830636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2448208248 (or 2448208246 counting only the distinct ones).

The product of its (nonzero) digits is 22394880, while the sum is 58.

The spelling of 68549830636 in words is "sixty-eight billion, five hundred forty-nine million, eight hundred thirty thousand, six hundred thirty-six".