68520940745 has 8 divisors (see below), whose sum is σ = 82614822720. Its totient is φ = 54556956720.

The previous prime is 68520940739. The next prime is 68520940801. The reversal of 68520940745 is 54704902586.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-68520940745 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 68520940693 and 68520940702.

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, 32473325 + ... + 32475434.

It is an arithmetic number, because the mean of its divisors is an integer number (10326852840).

Almost surely, 2^68520940745 is an apocalyptic number.

It is an amenable number.

68520940745 is a deficient number, since it is larger than the sum of its proper divisors (14093881975).

68520940745 is a wasteful number, since it uses less digits than its factorization.

68520940745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64948975.

The product of its (nonzero) digits is 2419200, while the sum is 50.

The spelling of 68520940745 in words is "sixty-eight billion, five hundred twenty million, nine hundred forty thousand, seven hundred forty-five".