21044950914193 has 2 divisors, whose sum is σ = 21044950914194. Its totient is φ = 21044950914192.

The previous prime is 21044950914187. The next prime is 21044950914301. The reversal of 21044950914193 is 39141905944012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20950915465089 + 94035449104 = 4577217^2 + 306652^2 .

It is a cyclic number.

It is not a de Polignac number, because 21044950914193 - 2⁴¹ = 18845927658641 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21044950914193.

It is not a weakly prime, because it can be changed into another prime (21044950914893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10522475457096 + 10522475457097.

It is an arithmetic number, because the mean of its divisors is an integer number (10522475457097).

Almost surely, 2^{21044950914193} is an apocalyptic number.

It is an amenable number.

21044950914193 is a deficient number, since it is larger than the sum of its proper divisors (1).

21044950914193 is an equidigital number, since it uses as much as digits as its factorization.

21044950914193 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1399680, while the sum is 52.

The spelling of 21044950914193 in words is "twenty-one trillion, forty-four billion, nine hundred fifty million, nine hundred fourteen thousand, one hundred ninety-three".