41023345439981 has 2 divisors, whose sum is σ = 41023345439982. Its totient is φ = 41023345439980.

The previous prime is 41023345439977. The next prime is 41023345440019. The reversal of 41023345439981 is 18993454332014.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24973666937956 + 16049678502025 = 4997366^2 + 4006205^2 .

It is a cyclic number.

It is not a de Polignac number, because 41023345439981 - 2² = 41023345439977 is a prime.

It is a super-2 number, since 2×41023345439981² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (41023345439911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20511672719990 + 20511672719991.

It is an arithmetic number, because the mean of its divisors is an integer number (20511672719991).

Almost surely, 2^{41023345439981} is an apocalyptic number.

It is an amenable number.

41023345439981 is a deficient number, since it is larger than the sum of its proper divisors (1).

41023345439981 is an equidigital number, since it uses as much as digits as its factorization.

41023345439981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11197440, while the sum is 56.

The spelling of 41023345439981 in words is "forty-one trillion, twenty-three billion, three hundred forty-five million, four hundred thirty-nine thousand, nine hundred eighty-one".