3716321772161 has 4 divisors (see below), whose sum is σ = 3716429485572. Its totient is φ = 3716214058752.

The previous prime is 3716321772103. The next prime is 3716321772169. The reversal of 3716321772161 is 1612771236173.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1767687247936 + 1948634524225 = 1329544^2 + 1395935^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3716321772161 is a prime.

It is a super-2 number, since 2×3716321772161² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3716321772169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53804936 + ... + 53873961.

It is an arithmetic number, because the mean of its divisors is an integer number (929107371393).

Almost surely, 2^{3716321772161} is an apocalyptic number.

It is an amenable number.

3716321772161 is a deficient number, since it is larger than the sum of its proper divisors (107713411).

3716321772161 is a wasteful number, since it uses less digits than its factorization.

3716321772161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107713410.

The product of its digits is 444528, while the sum is 47.

The spelling of 3716321772161 in words is "three trillion, seven hundred sixteen billion, three hundred twenty-one million, seven hundred seventy-two thousand, one hundred sixty-one".