8361273601 has 4 divisors (see below), whose sum is σ = 8371765332. Its totient is φ = 8350781872.

The previous prime is 8361273581. The next prime is 8361273617. The reversal of 8361273601 is 1063721638.

It is a Cunningham number, because it is equal to 91440²+1.

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 4054632976 + 4306640625 = 63676^2 + 65625^2 .

It is a cyclic number.

It is not a de Polignac number, because 8361273601 - 2²⁹ = 7824402689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8361277601) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 5244670 + ... + 5246263.

It is an arithmetic number, because the mean of its divisors is an integer number (2092941333).

Almost surely, 2^8361273601 is an apocalyptic number.

It is an amenable number.

8361273601 is a deficient number, since it is larger than the sum of its proper divisors (10491731).

8361273601 is a wasteful number, since it uses less digits than its factorization.

8361273601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10491730.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 8361273601 is about 91440.0000054681. Note that the first 5 decimals coincide. The cubic root of 8361273601 is about 2029.6639822554.

The spelling of 8361273601 in words is "eight billion, three hundred sixty-one million, two hundred seventy-three thousand, six hundred one".