513333530221397 has 2 divisors, whose sum is σ = 513333530221398. Its totient is φ = 513333530221396.

The previous prime is 513333530221387. The next prime is 513333530221409. The reversal of 513333530221397 is 793122035333315.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 492538525717681 + 20795004503716 = 22193209^2 + 4560154^2 .

It is a cyclic number.

It is not a de Polignac number, because 513333530221397 - 2¹⁰ = 513333530220373 is a prime.

It is a super-2 number, since 2×513333530221397² (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 (513333530221307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256666765110698 + 256666765110699.

It is an arithmetic number, because the mean of its divisors is an integer number (256666765110699).

Almost surely, 2^{513333530221397} is an apocalyptic number.

It is an amenable number.

513333530221397 is a deficient number, since it is larger than the sum of its proper divisors (1).

513333530221397 is an equidigital number, since it uses as much as digits as its factorization.

513333530221397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4592700, while the sum is 50.

The spelling of 513333530221397 in words is "five hundred thirteen trillion, three hundred thirty-three billion, five hundred thirty million, two hundred twenty-one thousand, three hundred ninety-seven".