9715321197481 has 27 divisors (see below), whose sum is σ = 10028273589399. Its totient is φ = 9412014785712.

The previous prime is 9715321197353. The next prime is 9715321197493. The reversal of 9715321197481 is 1847911235179.

The square root of 9715321197481 is 3116941.

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

It can be written as a sum of positive squares in only one way, i.e., 8837569568025 + 877751629456 = 2972805^2 + 936884^2 .

It is not a de Polignac number, because 9715321197481 - 2⁷ = 9715321197353 is a prime.

It is a super-2 number, since 2×9715321197481² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9715321197581) 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 26 ways as a sum of consecutive naturals, for example, 23186923890 + ... + 23186924308.

Almost surely, 2^{9715321197481} is an apocalyptic number.

9715321197481 is the 3116941-st square number.

9715321197481 is the 1558471-st centered octagonal number.

It is an amenable number.

9715321197481 is a deficient number, since it is larger than the sum of its proper divisors (312952391918).

9715321197481 is an frugal number, since it uses more digits than its factorization.

9715321197481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1270 (or 635 counting only the distinct ones).

The product of its digits is 3810240, while the sum is 58.

The spelling of 9715321197481 in words is "nine trillion, seven hundred fifteen billion, three hundred twenty-one million, one hundred ninety-seven thousand, four hundred eighty-one".