68541602045 has 12 divisors (see below), whose sum is σ = 95678481564. Its totient is φ = 46999955520.

The previous prime is 68541602029. The next prime is 68541602053. The reversal of 68541602045 is 54020614586.

It can be written as a sum of positive squares in 2 ways, for example, as 43111877956 + 25429724089 = 207634^2 + 159467^2 .

It is not a de Polignac number, because 68541602045 - 2⁴ = 68541602029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68541601993 and 68541602011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 139880576 + ... + 139881065.

It is an arithmetic number, because the mean of its divisors is an integer number (7973206797).

Almost surely, 2^68541602045 is an apocalyptic number.

It is an amenable number.

68541602045 is a deficient number, since it is larger than the sum of its proper divisors (27136879519).

68541602045 is a wasteful number, since it uses less digits than its factorization.

68541602045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279761660 (or 279761653 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 41.

The spelling of 68541602045 in words is "sixty-eight billion, five hundred forty-one million, six hundred two thousand, forty-five".