21450798043 has 2 divisors, whose sum is σ = 21450798044. Its totient is φ = 21450798042.

The previous prime is 21450798007. The next prime is 21450798079. The reversal of 21450798043 is 34089705412.

It is a balanced prime because it is at equal distance from previous prime (21450798007) and next prime (21450798079).

It is a cyclic number.

It is not a de Polignac number, because 21450798043 - 2²¹ = 21448700891 is a prime.

It is not a weakly prime, because it can be changed into another prime (21450792043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10725399021 + 10725399022.

It is an arithmetic number, because the mean of its divisors is an integer number (10725399022).

Almost surely, 2^21450798043 is an apocalyptic number.

21450798043 is a deficient number, since it is larger than the sum of its proper divisors (1).

21450798043 is an equidigital number, since it uses as much as digits as its factorization.

21450798043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 241920, while the sum is 43.

The spelling of 21450798043 in words is "twenty-one billion, four hundred fifty million, seven hundred ninety-eight thousand, forty-three".