495058478479421 has 2 divisors, whose sum is σ = 495058478479422. Its totient is φ = 495058478479420.

The previous prime is 495058478479379. The next prime is 495058478479501. The reversal of 495058478479421 is 124974874850594.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 279226974127396 + 215831504352025 = 16710086^2 + 14691205^2 .

It is a cyclic number.

It is not a de Polignac number, because 495058478479421 - 2¹⁰ = 495058478478397 is a prime.

It is a super-2 number, since 2×495058478479421² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (495058478479021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247529239239710 + 247529239239711.

It is an arithmetic number, because the mean of its divisors is an integer number (247529239239711).

Almost surely, 2^{495058478479421} is an apocalyptic number.

It is an amenable number.

495058478479421 is a deficient number, since it is larger than the sum of its proper divisors (1).

495058478479421 is an equidigital number, since it uses as much as digits as its factorization.

495058478479421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3251404800, while the sum is 77.

The spelling of 495058478479421 in words is "four hundred ninety-five trillion, fifty-eight billion, four hundred seventy-eight million, four hundred seventy-nine thousand, four hundred twenty-one".