798451260721 has 9 divisors (see below), whose sum is σ = 802248027321. Its totient is φ = 794672391252.

The previous prime is 798451260701. The next prime is 798451260743. The reversal of 798451260721 is 127062154897.

The square root of 798451260721 is 893561.

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

It is not a de Polignac number, because 798451260721 - 2³⁵ = 764091522353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (798451260701) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 199262100 + ... + 199266106.

Almost surely, 2^798451260721 is an apocalyptic number.

798451260721 is the 893561-st square number.

798451260721 is the 446781-st centered octagonal number.

It is an amenable number.

798451260721 is a deficient number, since it is larger than the sum of its proper divisors (3796766600).

798451260721 is an frugal number, since it uses more digits than its factorization.

798451260721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8460 (or 4230 counting only the distinct ones).

The product of its (nonzero) digits is 1693440, while the sum is 52.

The spelling of 798451260721 in words is "seven hundred ninety-eight billion, four hundred fifty-one million, two hundred sixty thousand, seven hundred twenty-one".