102845639111 has 2 divisors, whose sum is σ = 102845639112. Its totient is φ = 102845639110.

The previous prime is 102845639093. The next prime is 102845639119. The reversal of 102845639111 is 111936548201.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 102845639111 - 2²⁶ = 102778530247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102845639119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51422819555 + 51422819556.

It is an arithmetic number, because the mean of its divisors is an integer number (51422819556).

Almost surely, 2^102845639111 is an apocalyptic number.

102845639111 is a deficient number, since it is larger than the sum of its proper divisors (1).

102845639111 is an equidigital number, since it uses as much as digits as its factorization.

102845639111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 41.

The spelling of 102845639111 in words is "one hundred two billion, eight hundred forty-five million, six hundred thirty-nine thousand, one hundred eleven".