68346773405 has 8 divisors (see below), whose sum is σ = 82072582872. Its totient is φ = 54639782208.

The previous prime is 68346773399. The next prime is 68346773431. The reversal of 68346773405 is 50437764386.

It can be written as a sum of positive squares in 4 ways, for example, as 39542913316 + 28803860089 = 198854^2 + 169717^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 68346773405 - 2¹⁴ = 68346757021 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4696574 + ... + 4711103.

It is an arithmetic number, because the mean of its divisors is an integer number (10259072859).

Almost surely, 2^68346773405 is an apocalyptic number.

It is an amenable number.

68346773405 is a deficient number, since it is larger than the sum of its proper divisors (13725809467).

68346773405 is a wasteful number, since it uses less digits than its factorization.

68346773405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9409135.

The product of its (nonzero) digits is 10160640, while the sum is 53.

The spelling of 68346773405 in words is "sixty-eight billion, three hundred forty-six million, seven hundred seventy-three thousand, four hundred five".