68756881249 has 8 divisors (see below), whose sum is σ = 80251193088. Its totient is φ = 57680544480.

The previous prime is 68756881213. The next prime is 68756881261. The reversal of 68756881249 is 94218865786.

It is a happy number.

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 68756881249 - 2⁹ = 68756880737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68756881049) 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, 104493412 + ... + 104494069.

It is an arithmetic number, because the mean of its divisors is an integer number (10031399136).

Almost surely, 2^68756881249 is an apocalyptic number.

It is an amenable number.

68756881249 is a deficient number, since it is larger than the sum of its proper divisors (11494311839).

68756881249 is a wasteful number, since it uses less digits than its factorization.

68756881249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208987535.

The product of its digits is 46448640, while the sum is 64.

The spelling of 68756881249 in words is "sixty-eight billion, seven hundred fifty-six million, eight hundred eighty-one thousand, two hundred forty-nine".