9212115649841 has 8 divisors (see below), whose sum is σ = 10504312867944. Its totient is φ = 8003285994240.

The previous prime is 9212115649817. The next prime is 9212115649879. The reversal of 9212115649841 is 1489465112129.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4053493662241 + 5158621987600 = 2013329^2 + 2271260^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9212115649841 - 2⁶ = 9212115649777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9212115649811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20841890390 + ... + 20841890831.

It is an arithmetic number, because the mean of its divisors is an integer number (1313039108493).

Almost surely, 2^{9212115649841} is an apocalyptic number.

It is an amenable number.

9212115649841 is a deficient number, since it is larger than the sum of its proper divisors (1292197218103).

9212115649841 is a wasteful number, since it uses less digits than its factorization.

9212115649841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41683781251.

The product of its digits is 1244160, while the sum is 53.

The spelling of 9212115649841 in words is "nine trillion, two hundred twelve billion, one hundred fifteen million, six hundred forty-nine thousand, eight hundred forty-one".