68719746657366 has 36 divisors (see below), whose sum is σ = 173201810454972. Its totient is φ = 19634213330424.

The previous prime is 68719746657329. The next prime is 68719746657413. The reversal of 68719746657366 is 66375664791786.

68719746657366 is a `hidden beast` number, since 6 + 8 + 7 + 1 + 97 + 466 + 5 + 7 + 3 + 66 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 38956771600 + ... + 38956773363.

It is an arithmetic number, because the mean of its divisors is an integer number (4811161401527).

Almost surely, 2^{68719746657366} is an apocalyptic number.

68719746657366 is an abundant number, since it is smaller than the sum of its proper divisors (104482063797606).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68719746657366 is a wasteful number, since it uses less digits than its factorization.

68719746657366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77913544985 (or 77913544975 counting only the distinct ones).

The product of its digits is 11522165760, while the sum is 81.

The spelling of 68719746657366 in words is "sixty-eight trillion, seven hundred nineteen billion, seven hundred forty-six million, six hundred fifty-seven thousand, three hundred sixty-six".