68538268938 has 16 divisors (see below), whose sum is σ = 137198614176. Its totient is φ = 22825743600.

The previous prime is 68538268867. The next prime is 68538268957. The reversal of 68538268938 is 83986283586.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5079213 + ... + 5092688.

It is an arithmetic number, because the mean of its divisors is an integer number (8574913386).

Almost surely, 2^68538268938 is an apocalyptic number.

68538268938 is an abundant number, since it is smaller than the sum of its proper divisors (68660345238).

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

68538268938 is a wasteful number, since it uses less digits than its factorization.

68538268938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10173029.

The product of its digits is 119439360, while the sum is 66.

The spelling of 68538268938 in words is "sixty-eight billion, five hundred thirty-eight million, two hundred sixty-eight thousand, nine hundred thirty-eight".