68724543723 has 16 divisors (see below), whose sum is σ = 105843148416. Its totient is φ = 39201165440.

The previous prime is 68724543721. The next prime is 68724543761. The reversal of 68724543723 is 32734542786.

It is a cyclic number.

It is not a de Polignac number, because 68724543723 - 2¹ = 68724543721 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (68724543721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61251261 + ... + 61252382.

It is an arithmetic number, because the mean of its divisors is an integer number (6615196776).

Almost surely, 2^68724543723 is an apocalyptic number.

68724543723 is a deficient number, since it is larger than the sum of its proper divisors (37118604693).

68724543723 is a wasteful number, since it uses less digits than its factorization.

68724543723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122503674.

The product of its digits is 6773760, while the sum is 51.

The spelling of 68724543723 in words is "sixty-eight billion, seven hundred twenty-four million, five hundred forty-three thousand, seven hundred twenty-three".