8350121641 has 27 divisors (see below), whose sum is σ = 9106802341. Its totient is φ = 7655367104.

The previous prime is 8350121609. The next prime is 8350121651. The reversal of 8350121641 is 1461210538.

The square root of 8350121641 is 91379.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 104755225 + 8245366416 = 10235^2 + 90804^2 .

It is not a de Polignac number, because 8350121641 - 2⁵ = 8350121609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8350121651) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 60949725 + ... + 60949861.

Almost surely, 2^8350121641 is an apocalyptic number.

8350121641 is the 91379-th square number.

8350121641 is the 45690-th centered octagonal number.

It is an amenable number.

8350121641 is a deficient number, since it is larger than the sum of its proper divisors (756680700).

8350121641 is an equidigital number, since it uses as much as digits as its factorization.

8350121641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378 (or 189 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 31.

The cubic root of 8350121641 is about 2028.7612169905.

The spelling of 8350121641 in words is "eight billion, three hundred fifty million, one hundred twenty-one thousand, six hundred forty-one".