9763993818121 has 9 divisors (see below), whose sum is σ = 9780630071079. Its totient is φ = 9747385830336.

The previous prime is 9763993818113. The next prime is 9763993818127. The reversal of 9763993818121 is 1218183993679.

The square root of 9763993818121 is 3124739.

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., 3195352878025 + 6568640940096 = 1787555^2 + 2562936^2 .

It is not a de Polignac number, because 9763993818121 - 2³ = 9763993818113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9763993818127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2102947026 + ... + 2102951668.

Almost surely, 2^{9763993818121} is an apocalyptic number.

9763993818121 is the 3124739-th square number.

9763993818121 is the 1562370-th centered octagonal number.

It is an amenable number.

9763993818121 is a deficient number, since it is larger than the sum of its proper divisors (16636252958).

9763993818121 is an frugal number, since it uses more digits than its factorization.

9763993818121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10632 (or 5316 counting only the distinct ones).

The product of its digits is 35271936, while the sum is 67.

The spelling of 9763993818121 in words is "nine trillion, seven hundred sixty-three billion, nine hundred ninety-three million, eight hundred eighteen thousand, one hundred twenty-one".