7839669603481 has 3 divisors (see below), whose sum is σ = 7839672403423. Its totient is φ = 7839666803540.

The previous prime is 7839669603461. The next prime is 7839669603527. The reversal of 7839669603481 is 1843069669387.

The square root of 7839669603481 is 2799941.

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.

It can be written as a sum of positive squares in only one way, i.e., 3098511747081 + 4741157856400 = 1760259^2 + 2177420^2 .

It is not a de Polignac number, because 7839669603481 - 2²⁷ = 7839535385753 is a prime.

It is a super-2 number, since 2×7839669603481² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7839669603481.

It is not an unprimeable number, because it can be changed into a prime (7839669603431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1399971 + ... + 4199911.

Almost surely, 2^{7839669603481} is an apocalyptic number.

7839669603481 is the 2799941-st square number.

7839669603481 is the 1399971-st centered octagonal number.

It is an amenable number.

7839669603481 is a deficient number, since it is larger than the sum of its proper divisors (2799942).

7839669603481 is an frugal number, since it uses more digits than its factorization.

7839669603481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5599882 (or 2799941 counting only the distinct ones).

The product of its (nonzero) digits is 282175488, while the sum is 70.

The spelling of 7839669603481 in words is "seven trillion, eight hundred thirty-nine billion, six hundred sixty-nine million, six hundred three thousand, four hundred eighty-one".