275995721329 has 2 divisors, whose sum is σ = 275995721330. Its totient is φ = 275995721328.

The previous prime is 275995721257. The next prime is 275995721359. The reversal of 275995721329 is 923127599572.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 251049098304 + 24946623025 = 501048^2 + 157945^2 .

It is a cyclic number.

It is not a de Polignac number, because 275995721329 - 2⁷ = 275995721201 is a prime.

It is not a weakly prime, because it can be changed into another prime (275995721359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137997860664 + 137997860665.

It is an arithmetic number, because the mean of its divisors is an integer number (137997860665).

Almost surely, 2^275995721329 is an apocalyptic number.

It is an amenable number.

275995721329 is a deficient number, since it is larger than the sum of its proper divisors (1).

275995721329 is an equidigital number, since it uses as much as digits as its factorization.

275995721329 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21432600, while the sum is 61.

The spelling of 275995721329 in words is "two hundred seventy-five billion, nine hundred ninety-five million, seven hundred twenty-one thousand, three hundred twenty-nine".