68810484181 has 8 divisors (see below), whose sum is σ = 69068319320. Its totient is φ = 68552967168.

The previous prime is 68810484167. The next prime is 68810484199. The reversal of 68810484181 is 18148401886.

It can be written as a sum of positive squares in 4 ways, for example, as 38537616100 + 30272868081 = 196310^2 + 173991^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68810484181 - 2⁷ = 68810484053 is a prime.

It is a super-2 number, since 2×68810484181² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68810484161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 358375 + ... + 515803.

It is an arithmetic number, because the mean of its divisors is an integer number (8633539915).

Almost surely, 2^68810484181 is an apocalyptic number.

It is an amenable number.

68810484181 is a deficient number, since it is larger than the sum of its proper divisors (257835139).

68810484181 is a wasteful number, since it uses less digits than its factorization.

68810484181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159063.

The product of its (nonzero) digits is 393216, while the sum is 49.

The spelling of 68810484181 in words is "sixty-eight billion, eight hundred ten million, four hundred eighty-four thousand, one hundred eighty-one".