68688566401 has 16 divisors (see below), whose sum is σ = 84607600000. Its totient is φ = 54303395328.

The previous prime is 68688566381. The next prime is 68688566413. The reversal of 68688566401 is 10466588686.

68688566401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 68688566401 - 2⁷ = 68688566273 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68688566461) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 188511 + ... + 415828.

It is an arithmetic number, because the mean of its divisors is an integer number (5287975000).

Almost surely, 2^68688566401 is an apocalyptic number.

It is an amenable number.

68688566401 is a deficient number, since it is larger than the sum of its proper divisors (15919033599).

68688566401 is a wasteful number, since it uses less digits than its factorization.

68688566401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 605608.

The product of its (nonzero) digits is 13271040, while the sum is 58.

The spelling of 68688566401 in words is "sixty-eight billion, six hundred eighty-eight million, five hundred sixty-six thousand, four hundred one".