68789252838 has 32 divisors (see below), whose sum is σ = 140801126400. Its totient is φ = 22392822816.

The previous prime is 68789252803. The next prime is 68789252849. The reversal of 68789252838 is 83825298786.

It is a happy number.

It is a super-2 number, since 2×68789252838² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1867483 + ... + 1903961.

It is an arithmetic number, because the mean of its divisors is an integer number (4400035200).

Almost surely, 2^68789252838 is an apocalyptic number.

68789252838 is an abundant number, since it is smaller than the sum of its proper divisors (72011873562).

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

68789252838 is a wasteful number, since it uses less digits than its factorization.

68789252838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43836.

The product of its digits is 92897280, while the sum is 66.

The spelling of 68789252838 in words is "sixty-eight billion, seven hundred eighty-nine million, two hundred fifty-two thousand, eight hundred thirty-eight".