68541689224 has 16 divisors (see below), whose sum is σ = 136075412700. Its totient is φ = 32254912512.

The previous prime is 68541689221. The next prime is 68541689257. The reversal of 68541689224 is 42298614586.

It can be written as a sum of positive squares in 2 ways, for example, as 55700720100 + 12840969124 = 236010^2 + 113318^2 .

It is not an unprimeable number, because it can be changed into a prime (68541689221) 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, 251991369 + ... + 251991640.

Almost surely, 2^68541689224 is an apocalyptic number.

It is an amenable number.

68541689224 is a deficient number, since it is larger than the sum of its proper divisors (67533723476).

68541689224 is a wasteful number, since it uses less digits than its factorization.

68541689224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503983032 (or 503983028 counting only the distinct ones).

The product of its digits is 6635520, while the sum is 55.

The spelling of 68541689224 in words is "sixty-eight billion, five hundred forty-one million, six hundred eighty-nine thousand, two hundred twenty-four".