675639038509 has 2 divisors, whose sum is σ = 675639038510. Its totient is φ = 675639038508.

The previous prime is 675639038507. The next prime is 675639038539. The reversal of 675639038509 is 905830936576.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 474751316484 + 200887722025 = 689022^2 + 448205^2 .

It is a cyclic number.

It is not a de Polignac number, because 675639038509 - 2¹ = 675639038507 is a prime.

It is a super-2 number, since 2×675639038509² (a number of 24 digits) contains 22 as substring.

Together with 675639038507, 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 (675639038507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 337819519254 + 337819519255.

It is an arithmetic number, because the mean of its divisors is an integer number (337819519255).

Almost surely, 2^675639038509 is an apocalyptic number.

It is an amenable number.

675639038509 is a deficient number, since it is larger than the sum of its proper divisors (1).

675639038509 is an equidigital number, since it uses as much as digits as its factorization.

675639038509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36741600, while the sum is 61.

The spelling of 675639038509 in words is "six hundred seventy-five billion, six hundred thirty-nine million, thirty-eight thousand, five hundred nine".