67139800868 has 24 divisors (see below), whose sum is σ = 138611203584. Its totient is φ = 27846000000.

The previous prime is 67139800859. The next prime is 67139800883. The reversal of 67139800868 is 86800893176.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38674133 + ... + 38675868.

It is an arithmetic number, because the mean of its divisors is an integer number (5775466816).

Almost surely, 2^67139800868 is an apocalyptic number.

It is an amenable number.

67139800868 is an abundant number, since it is smaller than the sum of its proper divisors (71471402716).

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

67139800868 is a wasteful number, since it uses less digits than its factorization.

67139800868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77350043 (or 77350041 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 56.

The spelling of 67139800868 in words is "sixty-seven billion, one hundred thirty-nine million, eight hundred thousand, eight hundred sixty-eight".