5548187100681 has 9 divisors (see below), whose sum is σ = 8014058241319. Its totient is φ = 3698786689536.

The previous prime is 5548187100637. The next prime is 5548187100689. The reversal of 5548187100681 is 1860017818455.

The square root of 5548187100681 is 2355459.

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

5548187100681 is a `hidden beast` number, since 5 + 5 + 481 + 87 + 1 + 0 + 0 + 6 + 81 = 666.

It can be written as a sum of positive squares in only one way, i.e., 3838327497225 + 1709859603456 = 1959165^2 + 1307616^2 .

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 5548187100681 - 2²³ = 5548178712073 is a prime.

It is a super-2 number, since 2×5548187100681² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5548187100689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 6673801 + ... + 7458953.

Almost surely, 2^{5548187100681} is an apocalyptic number.

5548187100681 is the 2355459-th square number.

5548187100681 is the 1177730-th centered octagonal number.

It is an amenable number.

5548187100681 is a deficient number, since it is larger than the sum of its proper divisors (2465871140638).

5548187100681 is an frugal number, since it uses more digits than its factorization.

5548187100681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1570312 (or 785156 counting only the distinct ones).

The product of its (nonzero) digits is 2150400, while the sum is 54.

The spelling of 5548187100681 in words is "five trillion, five hundred forty-eight billion, one hundred eighty-seven million, one hundred thousand, six hundred eighty-one".