21443514535103 has 2 divisors, whose sum is σ = 21443514535104. Its totient is φ = 21443514535102.

The previous prime is 21443514535081. The next prime is 21443514535111. The reversal of 21443514535103 is 30153541534412.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21443514535103 - 2¹⁶ = 21443514469567 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21443514535153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10721757267551 + 10721757267552.

It is an arithmetic number, because the mean of its divisors is an integer number (10721757267552).

Almost surely, 2^{21443514535103} is an apocalyptic number.

21443514535103 is a deficient number, since it is larger than the sum of its proper divisors (1).

21443514535103 is an equidigital number, since it uses as much as digits as its factorization.

21443514535103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432000, while the sum is 41.

The spelling of 21443514535103 in words is "twenty-one trillion, four hundred forty-three billion, five hundred fourteen million, five hundred thirty-five thousand, one hundred three".