68165899396 has 81 divisors (see below), whose sum is σ = 147543675951. Its totient is φ = 27470424576.

The previous prime is 68165899391. The next prime is 68165899397. The reversal of 68165899396 is 69399856186.

The square root of 68165899396 is 261086.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 357739396 + 67808160000 = 18914^2 + 260400^2 .

It is not an unprimeable number, because it can be changed into a prime (68165899391) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 62137920 + ... + 62139016.

Almost surely, 2^68165899396 is an apocalyptic number.

68165899396 is the 261086-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68165899396

68165899396 is an abundant number, since it is smaller than the sum of its proper divisors (79377776555).

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

68165899396 is a wasteful number, since it uses less digits than its factorization.

68165899396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2246 (or 1123 counting only the distinct ones).

The product of its digits is 151165440, while the sum is 70.

The spelling of 68165899396 in words is "sixty-eight billion, one hundred sixty-five million, eight hundred ninety-nine thousand, three hundred ninety-six".