259651521054397 has 2 divisors, whose sum is σ = 259651521054398. Its totient is φ = 259651521054396.

The previous prime is 259651521054371. The next prime is 259651521054517. The reversal of 259651521054397 is 793450125156952.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 184571271661401 + 75080249392996 = 13585701^2 + 8664886^2 .

It is a cyclic number.

It is not a de Polignac number, because 259651521054397 - 2³⁹ = 259101765240509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (259651521054347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129825760527198 + 129825760527199.

It is an arithmetic number, because the mean of its divisors is an integer number (129825760527199).

Almost surely, 2^{259651521054397} is an apocalyptic number.

It is an amenable number.

259651521054397 is a deficient number, since it is larger than the sum of its proper divisors (1).

259651521054397 is an equidigital number, since it uses as much as digits as its factorization.

259651521054397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 102060000, while the sum is 64.

The spelling of 259651521054397 in words is "two hundred fifty-nine trillion, six hundred fifty-one billion, five hundred twenty-one million, fifty-four thousand, three hundred ninety-seven".