3661523523745 has 8 divisors (see below), whose sum is σ = 4393842595560. Its totient is φ = 2929209240960.

The previous prime is 3661523523727. The next prime is 3661523523751. The reversal of 3661523523745 is 5473253251663.

It can be written as a sum of positive squares in 4 ways, for example, as 413623914496 + 3247899609249 = 643136^2 + 1802193^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3661523523745 - 2⁹ = 3661523523233 is a prime.

It is a super-3 number, since 3×3661523523745³ (a number of 39 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3661523523692 and 3661523523701.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 782355 + ... + 2816935.

It is an arithmetic number, because the mean of its divisors is an integer number (549230324445).

Almost surely, 2^{3661523523745} is an apocalyptic number.

It is an amenable number.

3661523523745 is a deficient number, since it is larger than the sum of its proper divisors (732319071815).

3661523523745 is a wasteful number, since it uses less digits than its factorization.

3661523523745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2394515.

The product of its digits is 13608000, while the sum is 52.

The spelling of 3661523523745 in words is "three trillion, six hundred sixty-one billion, five hundred twenty-three million, five hundred twenty-three thousand, seven hundred forty-five".