68843549633 has 4 divisors (see below), whose sum is σ = 68844586068. Its totient is φ = 68842513200.

The previous prime is 68843549629. The next prime is 68843549651. The reversal of 68843549633 is 33694534886.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14147437249 + 54696112384 = 118943^2 + 233872^2 .

It is a cyclic number.

It is not a de Polignac number, because 68843549633 - 2² = 68843549629 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68843549693) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 411218 + ... + 553883.

It is an arithmetic number, because the mean of its divisors is an integer number (17211146517).

Almost surely, 2^68843549633 is an apocalyptic number.

It is an amenable number.

68843549633 is a deficient number, since it is larger than the sum of its proper divisors (1036435).

68843549633 is an equidigital number, since it uses as much as digits as its factorization.

68843549633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1036434.

The product of its digits is 44789760, while the sum is 59.

The spelling of 68843549633 in words is "sixty-eight billion, eight hundred forty-three million, five hundred forty-nine thousand, six hundred thirty-three".