9912641815933 has 2 divisors, whose sum is σ = 9912641815934. Its totient is φ = 9912641815932.

The previous prime is 9912641815897. The next prime is 9912641815949. The reversal of 9912641815933 is 3395181462199.

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., 9507435728569 + 405206087364 = 3083413^2 + 636558^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9912641815933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9912641810933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4956320907966 + 4956320907967.

It is an arithmetic number, because the mean of its divisors is an integer number (4956320907967).

Almost surely, 2^{9912641815933} is an apocalyptic number.

It is an amenable number.

9912641815933 is a deficient number, since it is larger than the sum of its proper divisors (1).

9912641815933 is an equidigital number, since it uses as much as digits as its factorization.

9912641815933 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12597120, while the sum is 61.

The spelling of 9912641815933 in words is "nine trillion, nine hundred twelve billion, six hundred forty-one million, eight hundred fifteen thousand, nine hundred thirty-three".