5340258398521 has 2 divisors, whose sum is σ = 5340258398522. Its totient is φ = 5340258398520.

The previous prime is 5340258398413. The next prime is 5340258398537. The reversal of 5340258398521 is 1258938520435.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2812043917225 + 2528214481296 = 1676915^2 + 1590036^2 .

It is a cyclic number.

It is not a de Polignac number, because 5340258398521 - 2⁷ = 5340258398393 is a prime.

It is not a weakly prime, because it can be changed into another prime (5340258398561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2670129199260 + 2670129199261.

It is an arithmetic number, because the mean of its divisors is an integer number (2670129199261).

Almost surely, 2^{5340258398521} is an apocalyptic number.

It is an amenable number.

5340258398521 is a deficient number, since it is larger than the sum of its proper divisors (1).

5340258398521 is an equidigital number, since it uses as much as digits as its factorization.

5340258398521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368000, while the sum is 55.

The spelling of 5340258398521 in words is "five trillion, three hundred forty billion, two hundred fifty-eight million, three hundred ninety-eight thousand, five hundred twenty-one".