204111140624509 has 2 divisors, whose sum is σ = 204111140624510. Its totient is φ = 204111140624508.

The previous prime is 204111140624507. The next prime is 204111140624543. The reversal of 204111140624509 is 905426041111402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 202870256022009 + 1240884602500 = 14243253^2 + 1113950^2 .

It is a cyclic number.

It is not a de Polignac number, because 204111140624509 - 2¹ = 204111140624507 is a prime.

It is a super-2 number, since 2×204111140624509² (a number of 29 digits) contains 22 as substring.

Together with 204111140624507, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204111140624507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102055570312254 + 102055570312255.

It is an arithmetic number, because the mean of its divisors is an integer number (102055570312255).

Almost surely, 2^{204111140624509} is an apocalyptic number.

It is an amenable number.

204111140624509 is a deficient number, since it is larger than the sum of its proper divisors (1).

204111140624509 is an equidigital number, since it uses as much as digits as its factorization.

204111140624509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69120, while the sum is 40.

The spelling of 204111140624509 in words is "two hundred four trillion, one hundred eleven billion, one hundred forty million, six hundred twenty-four thousand, five hundred nine".