41085147047821 has 2 divisors, whose sum is σ = 41085147047822. Its totient is φ = 41085147047820.

The previous prime is 41085147047773. The next prime is 41085147047843. The reversal of 41085147047821 is 12874074158014.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23615371989225 + 17469775058596 = 4859565^2 + 4179686^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-41085147047821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (41085147041821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20542573523910 + 20542573523911.

It is an arithmetic number, because the mean of its divisors is an integer number (20542573523911).

Almost surely, 2^{41085147047821} is an apocalyptic number.

It is an amenable number.

41085147047821 is a deficient number, since it is larger than the sum of its proper divisors (1).

41085147047821 is an equidigital number, since it uses as much as digits as its factorization.

41085147047821 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2007040, while the sum is 52.

The spelling of 41085147047821 in words is "forty-one trillion, eighty-five billion, one hundred forty-seven million, forty-seven thousand, eight hundred twenty-one".