102845639093 has 2 divisors, whose sum is σ = 102845639094. Its totient is φ = 102845639092.

The previous prime is 102845639077. The next prime is 102845639111. The reversal of 102845639093 is 390936548201.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68341462084 + 34504177009 = 261422^2 + 185753^2 .

It is a cyclic number.

It is not a de Polignac number, because 102845639093 - 2⁴ = 102845639077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102845639023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51422819546 + 51422819547.

It is an arithmetic number, because the mean of its divisors is an integer number (51422819547).

Almost surely, 2^102845639093 is an apocalyptic number.

It is an amenable number.

102845639093 is a deficient number, since it is larger than the sum of its proper divisors (1).

102845639093 is an equidigital number, since it uses as much as digits as its factorization.

102845639093 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1399680, while the sum is 50.

The spelling of 102845639093 in words is "one hundred two billion, eight hundred forty-five million, six hundred thirty-nine thousand, ninety-three".