68768200757 has 4 divisors (see below), whose sum is σ = 69540877260. Its totient is φ = 67995524256.

The previous prime is 68768200727. The next prime is 68768200759. The reversal of 68768200757 is 75700286786.

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 6095081041 + 62673119716 = 78071^2 + 250346^2 .

It is a cyclic number.

It is not a de Polignac number, because 68768200757 - 2¹⁰ = 68768199733 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 (68768200759) 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, 386338118 + ... + 386338295.

It is an arithmetic number, because the mean of its divisors is an integer number (17385219315).

Almost surely, 2^68768200757 is an apocalyptic number.

It is an amenable number.

68768200757 is a deficient number, since it is larger than the sum of its proper divisors (772676503).

68768200757 is an equidigital number, since it uses as much as digits as its factorization.

68768200757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 772676502.

The product of its (nonzero) digits is 7902720, while the sum is 56.

The spelling of 68768200757 in words is "sixty-eight billion, seven hundred sixty-eight million, two hundred thousand, seven hundred fifty-seven".