68699726181 has 16 divisors (see below), whose sum is σ = 101781782400. Its totient is φ = 45797832864.

The previous prime is 68699726177. The next prime is 68699726189. The reversal of 68699726181 is 18162799686.

68699726181 is a `hidden beast` number, since 6 + 8 + 6 + 9 + 9 + 7 + 2 + 618 + 1 = 666.

It is not a de Polignac number, because 68699726181 - 2² = 68699726177 is a prime.

It is a super-3 number, since 3×68699726181³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a hoax number, since the sum of its digits (63) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68699726189) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 849265 + ... + 926633.

It is an arithmetic number, because the mean of its divisors is an integer number (6361361400).

Almost surely, 2^68699726181 is an apocalyptic number.

It is an amenable number.

68699726181 is a deficient number, since it is larger than the sum of its proper divisors (33082056219).

68699726181 is a wasteful number, since it uses less digits than its factorization.

68699726181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110265 (or 110259 counting only the distinct ones).

The product of its digits is 15676416, while the sum is 63.

The spelling of 68699726181 in words is "sixty-eight billion, six hundred ninety-nine million, seven hundred twenty-six thousand, one hundred eighty-one".