102219375509 has 2 divisors, whose sum is σ = 102219375510. Its totient is φ = 102219375508.

The previous prime is 102219375481. The next prime is 102219375611. The reversal of 102219375509 is 905573912201.

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., 82571746609 + 19647628900 = 287353^2 + 140170^2 .

It is a cyclic number.

It is not a de Polignac number, because 102219375509 - 2²⁴ = 102202598293 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102219375509.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102219378509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51109687754 + 51109687755.

It is an arithmetic number, because the mean of its divisors is an integer number (51109687755).

Almost surely, 2^102219375509 is an apocalyptic number.

It is an amenable number.

102219375509 is a deficient number, since it is larger than the sum of its proper divisors (1).

102219375509 is an equidigital number, since it uses as much as digits as its factorization.

102219375509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 170100, while the sum is 44.

The spelling of 102219375509 in words is "one hundred two billion, two hundred nineteen million, three hundred seventy-five thousand, five hundred nine".