68727333138 has 64 divisors (see below), whose sum is σ = 141930472320. Its totient is φ = 22172774400.

The previous prime is 68727333133. The next prime is 68727333221. The reversal of 68727333138 is 83133372786.

It is a super-4 number, since 4×68727333138⁴ (a number of 44 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (68727333133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17490358 + ... + 17494286.

It is an arithmetic number, because the mean of its divisors is an integer number (2217663630).

Almost surely, 2^68727333138 is an apocalyptic number.

68727333138 is an abundant number, since it is smaller than the sum of its proper divisors (73203139182).

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

68727333138 is a wasteful number, since it uses less digits than its factorization.

68727333138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4523.

The product of its digits is 3048192, while the sum is 51.

The spelling of 68727333138 in words is "sixty-eight billion, seven hundred twenty-seven million, three hundred thirty-three thousand, one hundred thirty-eight".