9616933271821 has 2 divisors, whose sum is σ = 9616933271822. Its totient is φ = 9616933271820.

The previous prime is 9616933271789. The next prime is 9616933271831. The reversal of 9616933271821 is 1281723396169.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8820537663721 + 796395608100 = 2969939^2 + 892410^2 .

It is an emirp because it is prime and its reverse (1281723396169) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9616933271821 - 2⁵ = 9616933271789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9616933271831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4808466635910 + 4808466635911.

It is an arithmetic number, because the mean of its divisors is an integer number (4808466635911).

Almost surely, 2^{9616933271821} is an apocalyptic number.

It is an amenable number.

9616933271821 is a deficient number, since it is larger than the sum of its proper divisors (1).

9616933271821 is an equidigital number, since it uses as much as digits as its factorization.

9616933271821 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5878656, while the sum is 58.

The spelling of 9616933271821 in words is "nine trillion, six hundred sixteen billion, nine hundred thirty-three million, two hundred seventy-one thousand, eight hundred twenty-one".