39823649965441 has 2 divisors, whose sum is σ = 39823649965442. Its totient is φ = 39823649965440.

The previous prime is 39823649965439. The next prime is 39823649965487. The reversal of 39823649965441 is 14456994632893.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39808477884816 + 15172080625 = 6309396^2 + 123175^2 .

It is a cyclic number.

It is not a de Polignac number, because 39823649965441 - 2¹ = 39823649965439 is a prime.

Together with 39823649965439, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (39823649963441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19911824982720 + 19911824982721.

It is an arithmetic number, because the mean of its divisors is an integer number (19911824982721).

Almost surely, 2^{39823649965441} is an apocalyptic number.

It is an amenable number.

39823649965441 is a deficient number, since it is larger than the sum of its proper divisors (1).

39823649965441 is an equidigital number, since it uses as much as digits as its factorization.

39823649965441 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1209323520, while the sum is 73.

The spelling of 39823649965441 in words is "thirty-nine trillion, eight hundred twenty-three billion, six hundred forty-nine million, nine hundred sixty-five thousand, four hundred forty-one".