8214960798721 has 16 divisors (see below), whose sum is σ = 8444040845904. Its totient is φ = 7986254275584.

The previous prime is 8214960798719. The next prime is 8214960798757. The reversal of 8214960798721 is 1278970694128.

It can be written as a sum of positive squares in 8 ways, for example, as 1398161988721 + 6816798810000 = 1182439^2 + 2610900^2 .

It is a cyclic number.

It is not a de Polignac number, because 8214960798721 - 2¹ = 8214960798719 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8214960798701) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 342377901 + ... + 342401893.

It is an arithmetic number, because the mean of its divisors is an integer number (527752552869).

Almost surely, 2^{8214960798721} is an apocalyptic number.

It is an amenable number.

8214960798721 is a deficient number, since it is larger than the sum of its proper divisors (229080047183).

8214960798721 is a wasteful number, since it uses less digits than its factorization.

8214960798721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31380.

The product of its (nonzero) digits is 24385536, while the sum is 64.

The spelling of 8214960798721 in words is "eight trillion, two hundred fourteen billion, nine hundred sixty million, seven hundred ninety-eight thousand, seven hundred twenty-one".