68068060781 has 8 divisors (see below), whose sum is σ = 78351725760. Its totient is φ = 57924309888.

The previous prime is 68068060763. The next prime is 68068060787. The reversal of 68068060781 is 18706086086.

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 68068060781 - 2¹⁸ = 68067798637 is a prime.

It is a super-2 number, since 2×68068060781² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68068060787) 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, 34977476 + ... + 34979421.

It is an arithmetic number, because the mean of its divisors is an integer number (9793965720).

Almost surely, 2^68068060781 is an apocalyptic number.

It is an amenable number.

68068060781 is a deficient number, since it is larger than the sum of its proper divisors (10283664979).

68068060781 is a wasteful number, since it uses less digits than its factorization.

68068060781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69957043.

The product of its (nonzero) digits is 774144, while the sum is 50.

The spelling of 68068060781 in words is "sixty-eight billion, sixty-eight million, sixty thousand, seven hundred eighty-one".