3661726549248 has 126 divisors (see below), whose sum is σ = 10958711643194. Its totient is φ = 1220575454208.

The previous prime is 3661726549213. The next prime is 3661726549267. The reversal of 3661726549248 is 8429456271663.

3661726549248 is a `hidden beast` number, since 3 + 6 + 61 + 7 + 2 + 6 + 549 + 24 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 3581904478464 + 79822070784 = 1892592^2 + 282528^2 .

It is a congruent number.

It is an unprimeable number.

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 13 ways as a sum of consecutive naturals, for example, 9623815 + ... + 9997062.

Almost surely, 2^{3661726549248} is an apocalyptic number.

It is an amenable number.

3661726549248 is an abundant number, since it is smaller than the sum of its proper divisors (7296985093946).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3661726549248 is an frugal number, since it uses more digits than its factorization.

3661726549248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19620911 (or 19620882 counting only the distinct ones).

The product of its digits is 104509440, while the sum is 63.

The spelling of 3661726549248 in words is "three trillion, six hundred sixty-one billion, seven hundred twenty-six million, five hundred forty-nine thousand, two hundred forty-eight".