68136305736 has 32 divisors (see below), whose sum is σ = 176214585600. Its totient is φ = 21928925760.

The previous prime is 68136305683. The next prime is 68136305761. The reversal of 68136305736 is 63750363186.

It is an unprimeable number.

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, 48947800 + ... + 48949191.

It is an arithmetic number, because the mean of its divisors is an integer number (5506705800).

Almost surely, 2^68136305736 is an apocalyptic number.

It is an amenable number.

68136305736 is an abundant number, since it is smaller than the sum of its proper divisors (108078279864).

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

68136305736 is a wasteful number, since it uses less digits than its factorization.

68136305736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97897029 (or 97897025 counting only the distinct ones).

The product of its (nonzero) digits is 1632960, while the sum is 48.

The spelling of 68136305736 in words is "sixty-eight billion, one hundred thirty-six million, three hundred five thousand, seven hundred thirty-six".