55668296732161 has 27 divisors (see below), whose sum is σ = 56733955979337. Its totient is φ = 54622553754240.

The previous prime is 55668296732143. The next prime is 55668296732197. The reversal of 55668296732161 is 16123769286655.

The square root of 55668296732161 is 7461119.

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

It can be written as a sum of positive squares in 4 ways, for example, as 5109882855025 + 50558413877136 = 2260505^2 + 7110444^2 .

It is not a de Polignac number, because 55668296732161 - 2³⁵ = 55633936993793 is a prime.

It is a super-2 number, since 2×55668296732161² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55668296738161) 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 26 ways as a sum of consecutive naturals, for example, 149244763171 + ... + 149244763543.

Almost surely, 2^{55668296732161} is an apocalyptic number.

55668296732161 is the 7461119-th square number.

55668296732161 is the 3730560-th centered octagonal number.

It is an amenable number.

55668296732161 is a deficient number, since it is larger than the sum of its proper divisors (1065659247176).

55668296732161 is an frugal number, since it uses more digits than its factorization.

55668296732161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1394 (or 697 counting only the distinct ones).

The product of its digits is 195955200, while the sum is 67.

The spelling of 55668296732161 in words is "fifty-five trillion, six hundred sixty-eight billion, two hundred ninety-six million, seven hundred thirty-two thousand, one hundred sixty-one".