68770256305 has 8 divisors (see below), whose sum is σ = 82760769000. Its totient is φ = 54858564096.

The previous prime is 68770256299. The next prime is 68770256309. The reversal of 68770256305 is 50365207786.

It can be written as a sum of positive squares in 4 ways, for example, as 5949345424 + 62820910881 = 77132^2 + 250641^2 .

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 68770256305 - 2³ = 68770256297 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68770256309) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19703200 + ... + 19706689.

It is an arithmetic number, because the mean of its divisors is an integer number (10345096125).

Almost surely, 2^68770256305 is an apocalyptic number.

It is an amenable number.

68770256305 is a deficient number, since it is larger than the sum of its proper divisors (13990512695).

68770256305 is a wasteful number, since it uses less digits than its factorization.

68770256305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39410243.

The product of its (nonzero) digits is 2116800, while the sum is 49.

The spelling of 68770256305 in words is "sixty-eight billion, seven hundred seventy million, two hundred fifty-six thousand, three hundred five".