68184176641 has 25 divisors (see below), whose sum is σ = 80648243461. Its totient is φ = 57642982992.

The previous prime is 68184176629. The next prime is 68184176651. The reversal of 68184176641 is 14667148186.

It is a happy number.

The square root of 68184176641 is 261121.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1248138241 + 66936038400 = 35329^2 + 258720^2 .

It is not a de Polignac number, because 68184176641 - 2⁹ = 68184176129 is a prime.

It is a super-2 number, since 2×68184176641² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68184176611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 24 ways as a sum of consecutive naturals, for example, 934029781 + ... + 934029853.

Almost surely, 2^68184176641 is an apocalyptic number.

68184176641 is the 261121-st square number.

68184176641 is the 130561-st centered octagonal number.

It is an amenable number.

68184176641 is a deficient number, since it is larger than the sum of its proper divisors (12464066820).

68184176641 is an frugal number, since it uses more digits than its factorization.

68184176641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320 (or 80 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 52.

The spelling of 68184176641 in words is "sixty-eight billion, one hundred eighty-four million, one hundred seventy-six thousand, six hundred forty-one".