68729830845 has 32 divisors (see below), whose sum is σ = 123575784192. Its totient is φ = 32365082112.

The previous prime is 68729830717. The next prime is 68729830849. The reversal of 68729830845 is 54803892786.

It is not a de Polignac number, because 68729830845 - 2⁷ = 68729830717 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68729830849) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 7657704 + ... + 7666673.

It is an arithmetic number, because the mean of its divisors is an integer number (3861743256).

Almost surely, 2^68729830845 is an apocalyptic number.

68729830845 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

68729830845 is a deficient number, since it is larger than the sum of its proper divisors (54845953347).

68729830845 is a wasteful number, since it uses less digits than its factorization.

68729830845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15324421.

The product of its (nonzero) digits is 23224320, while the sum is 60.

The spelling of 68729830845 in words is "sixty-eight billion, seven hundred twenty-nine million, eight hundred thirty thousand, eight hundred forty-five".