68554606181 has 16 divisors (see below), whose sum is σ = 74543667264. Its totient is φ = 62793771264.

The previous prime is 68554606151. The next prime is 68554606193. The reversal of 68554606181 is 18160645586.

It is a cyclic number.

It is not a de Polignac number, because 68554606181 - 2¹⁰ = 68554605157 is a prime.

It is a super-2 number, since 2×68554606181² (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 (68554606121) 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, 33206 + ... + 371768.

It is an arithmetic number, because the mean of its divisors is an integer number (4658979204).

Almost surely, 2^68554606181 is an apocalyptic number.

It is an amenable number.

68554606181 is a deficient number, since it is larger than the sum of its proper divisors (5989061083).

68554606181 is a wasteful number, since it uses less digits than its factorization.

68554606181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338900.

The product of its (nonzero) digits is 1382400, while the sum is 50.

The spelling of 68554606181 in words is "sixty-eight billion, five hundred fifty-four million, six hundred six thousand, one hundred eighty-one".