790834925521 has 3 divisors (see below), whose sum is σ = 790835814811. Its totient is φ = 790834036232.

The previous prime is 790834925497. The next prime is 790834925527. The reversal of 790834925521 is 125529438097.

The square root of 790834925521 is 889289.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 125529438097 = 7 ⋅17932776871.

It can be written as a sum of positive squares in only one way, i.e., 628038815121 + 162796110400 = 792489^2 + 403480^2 .

It is a de Polignac number, because none of the positive numbers 2^k-790834925521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (790834925527) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 444645 + ... + 1333933.

Almost surely, 2^790834925521 is an apocalyptic number.

790834925521 is the 889289-th square number.

790834925521 is the 444645-th centered octagonal number.

It is an amenable number.

790834925521 is a deficient number, since it is larger than the sum of its proper divisors (889290).

790834925521 is an frugal number, since it uses more digits than its factorization.

790834925521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1778578 (or 889289 counting only the distinct ones).

The product of its (nonzero) digits is 5443200, while the sum is 55.

The spelling of 790834925521 in words is "seven hundred ninety billion, eight hundred thirty-four million, nine hundred twenty-five thousand, five hundred twenty-one".