8821645817041 has 2 divisors, whose sum is σ = 8821645817042. Its totient is φ = 8821645817040.

The previous prime is 8821645816987. The next prime is 8821645817051. The reversal of 8821645817041 is 1407185461288.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8821494010000 + 151807041 = 2970100^2 + 12321^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8821645817041 is a prime.

It is not a weakly prime, because it can be changed into another prime (8821645817051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4410822908520 + 4410822908521.

It is an arithmetic number, because the mean of its divisors is an integer number (4410822908521).

Almost surely, 2^{8821645817041} is an apocalyptic number.

It is an amenable number.

8821645817041 is a deficient number, since it is larger than the sum of its proper divisors (1).

8821645817041 is an equidigital number, since it uses as much as digits as its factorization.

8821645817041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3440640, while the sum is 55.

The spelling of 8821645817041 in words is "eight trillion, eight hundred twenty-one billion, six hundred forty-five million, eight hundred seventeen thousand, forty-one".