68258175690 has 16 divisors (see below), whose sum is σ = 163819621728. Its totient is φ = 18202180176.

The previous prime is 68258175637. The next prime is 68258175703. The reversal of 68258175690 is 9657185286.

It is a super-2 number, since 2×68258175690² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 68258175690.

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, 1137636232 + ... + 1137636291.

It is an arithmetic number, because the mean of its divisors is an integer number (10238726358).

Almost surely, 2^68258175690 is an apocalyptic number.

68258175690 is an abundant number, since it is smaller than the sum of its proper divisors (95561446038).

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

68258175690 is a wasteful number, since it uses less digits than its factorization.

68258175690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2275272533.

The product of its (nonzero) digits is 7257600, while the sum is 57.

The spelling of 68258175690 in words is "sixty-eight billion, two hundred fifty-eight million, one hundred seventy-five thousand, six hundred ninety".