3581407817069 has 8 divisors (see below), whose sum is σ = 3595497191160. Its totient is φ = 3567345255936.

The previous prime is 3581407817047. The next prime is 3581407817107. The reversal of 3581407817069 is 9607187041853.

It can be written as a sum of positive squares in 4 ways, for example, as 320512235044 + 3260895582025 = 566138^2 + 1805795^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 3581407817069 - 2²⁰ = 3581406768493 is a prime.

It is a super-2 number, since 2×3581407817069² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3581407816999 and 3581407817017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3581407817569) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6435554 + ... + 6969875.

It is an arithmetic number, because the mean of its divisors is an integer number (449437148895).

Almost surely, 2^{3581407817069} is an apocalyptic number.

It is an amenable number.

3581407817069 is a deficient number, since it is larger than the sum of its proper divisors (14089374091).

3581407817069 is a wasteful number, since it uses less digits than its factorization.

3581407817069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13406479.

The product of its (nonzero) digits is 10160640, while the sum is 59.

The spelling of 3581407817069 in words is "three trillion, five hundred eighty-one billion, four hundred seven million, eight hundred seventeen thousand, sixty-nine".