21440476741093 has 2 divisors, whose sum is σ = 21440476741094. Its totient is φ = 21440476741092.

The previous prime is 21440476741081. The next prime is 21440476741127. The reversal of 21440476741093 is 39014767404412.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19343257221409 + 2097219519684 = 4398097^2 + 1448178^2 .

It is a cyclic number.

It is not a de Polignac number, because 21440476741093 - 2¹³ = 21440476732901 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21440476741093.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21440476741693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10720238370546 + 10720238370547.

It is an arithmetic number, because the mean of its divisors is an integer number (10720238370547).

Almost surely, 2^{21440476741093} is an apocalyptic number.

It is an amenable number.

21440476741093 is a deficient number, since it is larger than the sum of its proper divisors (1).

21440476741093 is an equidigital number, since it uses as much as digits as its factorization.

21440476741093 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4064256, while the sum is 52.

The spelling of 21440476741093 in words is "twenty-one trillion, four hundred forty billion, four hundred seventy-six million, seven hundred forty-one thousand, ninety-three".