68727968397 has 40 divisors (see below), whose sum is σ = 116870783040. Its totient is φ = 39842288640.

The previous prime is 68727968389. The next prime is 68727968401. The reversal of 68727968397 is 79386972786.

It is not a de Polignac number, because 68727968397 - 2³ = 68727968389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68727968377) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1656372 + ... + 1697357.

It is an arithmetic number, because the mean of its divisors is an integer number (2921769576).

Almost surely, 2^68727968397 is an apocalyptic number.

It is an amenable number.

68727968397 is a deficient number, since it is larger than the sum of its proper divisors (48142814643).

68727968397 is a wasteful number, since it uses less digits than its factorization.

68727968397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3353775 (or 3353766 counting only the distinct ones).

The product of its digits is 384072192, while the sum is 72.

The spelling of 68727968397 in words is "sixty-eight billion, seven hundred twenty-seven million, nine hundred sixty-eight thousand, three hundred ninety-seven".