68166258513796 has 27 divisors (see below), whose sum is σ = 119740625332293. Its totient is φ = 33955132055040.

The previous prime is 68166258513781. The next prime is 68166258513797. The reversal of 68166258513796 is 69731585266186.

The square root of 68166258513796 is 8256286.

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

It can be written as a sum of positive squares in only one way, i.e., 10522692576900 + 57643565936896 = 3243870^2 + 7592336^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68166258513797) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 4474899396 + ... + 4474914628.

Almost surely, 2^{68166258513796} is an apocalyptic number.

68166258513796 is the 8256286-th square number.

It is an amenable number.

68166258513796 is a deficient number, since it is larger than the sum of its proper divisors (51574366818497).

68166258513796 is an frugal number, since it uses more digits than its factorization.

68166258513796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31012 (or 15506 counting only the distinct ones).

The product of its digits is 783820800, while the sum is 73.

The spelling of 68166258513796 in words is "sixty-eight trillion, one hundred sixty-six billion, two hundred fifty-eight million, five hundred thirteen thousand, seven hundred ninety-six".