68661852231207 has 4 divisors (see below), whose sum is σ = 91549136308280. Its totient is φ = 45774568154136.

The previous prime is 68661852231197. The next prime is 68661852231293. The reversal of 68661852231207 is 70213225816686.

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

It is not a de Polignac number, because 68661852231207 - 2⁷ = 68661852231079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68661852231307) 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, 11443642038532 + ... + 11443642038537.

It is an arithmetic number, because the mean of its divisors is an integer number (22887284077070).

Almost surely, 2^{68661852231207} is an apocalyptic number.

68661852231207 is a deficient number, since it is larger than the sum of its proper divisors (22887284077073).

68661852231207 is a wasteful number, since it uses less digits than its factorization.

68661852231207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22887284077072.

The product of its (nonzero) digits is 11612160, while the sum is 57.

The spelling of 68661852231207 in words is "sixty-eight trillion, six hundred sixty-one billion, eight hundred fifty-two million, two hundred thirty-one thousand, two hundred seven".