19316652952109 has 2 divisors, whose sum is σ = 19316652952110. Its totient is φ = 19316652952108.

The previous prime is 19316652952099. The next prime is 19316652952123. The reversal of 19316652952109 is 90125925661391.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19305012700009 + 11640252100 = 4393747^2 + 107890^2 .

It is a cyclic number.

It is not a de Polignac number, because 19316652952109 - 2²⁰ = 19316651903533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19316652972109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9658326476054 + 9658326476055.

It is an arithmetic number, because the mean of its divisors is an integer number (9658326476055).

Almost surely, 2^{19316652952109} is an apocalyptic number.

It is an amenable number.

19316652952109 is a deficient number, since it is larger than the sum of its proper divisors (1).

19316652952109 is an equidigital number, since it uses as much as digits as its factorization.

19316652952109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7873200, while the sum is 59.

The spelling of 19316652952109 in words is "nineteen trillion, three hundred sixteen billion, six hundred fifty-two million, nine hundred fifty-two thousand, one hundred nine".