3621312362161 has 8 divisors (see below), whose sum is σ = 3901590622440. Its totient is φ = 3341279212032.

The previous prime is 3621312362159. The next prime is 3621312362197. The reversal of 3621312362161 is 1612632131263.

3621312362161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 884670043761 + 2736642318400 = 940569^2 + 1654280^2 .

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 3621312362161 - 2¹ = 3621312362159 is a prime.

It is a super-2 number, since 2×3621312362161² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3621312362161.

It is not an unprimeable number, because it can be changed into a prime (3621312365161) 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, 61246846 + ... + 61305943.

It is an arithmetic number, because the mean of its divisors is an integer number (487698827805).

Almost surely, 2^{3621312362161} is an apocalyptic number.

It is an amenable number.

3621312362161 is a deficient number, since it is larger than the sum of its proper divisors (280278260279).

3621312362161 is a wasteful number, since it uses less digits than its factorization.

3621312362161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122555075.

The product of its digits is 46656, while the sum is 37.

The spelling of 3621312362161 in words is "three trillion, six hundred twenty-one billion, three hundred twelve million, three hundred sixty-two thousand, one hundred sixty-one".