275520243637489 has 2 divisors, whose sum is σ = 275520243637490. Its totient is φ = 275520243637488.

The previous prime is 275520243637487. The next prime is 275520243637579. The reversal of 275520243637489 is 984736342025572.

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., 214001555379264 + 61518688258225 = 14628792^2 + 7843385^2 .

It is a cyclic number.

It is not a de Polignac number, because 275520243637489 - 2¹ = 275520243637487 is a prime.

It is a super-2 number, since 2×275520243637489² (a number of 30 digits) contains 22 as substring.

Together with 275520243637487, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (275520243637487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137760121818744 + 137760121818745.

It is an arithmetic number, because the mean of its divisors is an integer number (137760121818745).

Almost surely, 2^{275520243637489} is an apocalyptic number.

It is an amenable number.

275520243637489 is a deficient number, since it is larger than the sum of its proper divisors (1).

275520243637489 is an equidigital number, since it uses as much as digits as its factorization.

275520243637489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 609638400, while the sum is 67.

The spelling of 275520243637489 in words is "two hundred seventy-five trillion, five hundred twenty billion, two hundred forty-three million, six hundred thirty-seven thousand, four hundred eighty-nine".