275804476421 has 2 divisors, whose sum is σ = 275804476422. Its totient is φ = 275804476420.

The previous prime is 275804476397. The next prime is 275804476429. The reversal of 275804476421 is 124674408572.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 271872559396 + 3931917025 = 521414^2 + 62705^2 .

It is a cyclic number.

It is not a de Polignac number, because 275804476421 - 2¹⁴ = 275804460037 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 275804476421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (275804476429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137902238210 + 137902238211.

It is an arithmetic number, because the mean of its divisors is an integer number (137902238211).

Almost surely, 2^275804476421 is an apocalyptic number.

It is an amenable number.

275804476421 is a deficient number, since it is larger than the sum of its proper divisors (1).

275804476421 is an equidigital number, since it uses as much as digits as its factorization.

275804476421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3010560, while the sum is 50.

The spelling of 275804476421 in words is "two hundred seventy-five billion, eight hundred four million, four hundred seventy-six thousand, four hundred twenty-one".