102443213209189 has 2 divisors, whose sum is σ = 102443213209190. Its totient is φ = 102443213209188.

The previous prime is 102443213209177. The next prime is 102443213209193. The reversal of 102443213209189 is 981902312344201.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 81083721622500 + 21359491586689 = 9004650^2 + 4621633^2 .

It is a cyclic number.

It is not a de Polignac number, because 102443213209189 - 2¹¹ = 102443213207141 is a prime.

It is a super-2 number, since 2×102443213209189² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102443213209889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51221606604594 + 51221606604595.

It is an arithmetic number, because the mean of its divisors is an integer number (51221606604595).

Almost surely, 2^{102443213209189} is an apocalyptic number.

It is an amenable number.

102443213209189 is a deficient number, since it is larger than the sum of its proper divisors (1).

102443213209189 is an equidigital number, since it uses as much as digits as its factorization.

102443213209189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 746496, while the sum is 49.

The spelling of 102443213209189 in words is "one hundred two trillion, four hundred forty-three billion, two hundred thirteen million, two hundred nine thousand, one hundred eighty-nine".