259622091698 has 6 divisors (see below), whose sum is σ = 389434218429. Its totient is φ = 129810685556.

The previous prime is 259622091691. The next prime is 259622091719. The reversal of 259622091698 is 896190226952.

It can be written as a sum of positive squares in 2 ways, for example, as 178233419329 + 81388672369 = 422177^2 + 285287^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=360293.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (259622091691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 540440 + ... + 900732.

Almost surely, 2^259622091698 is an apocalyptic number.

259622091698 is a deficient number, since it is larger than the sum of its proper divisors (129812126731).

259622091698 is an frugal number, since it uses more digits than its factorization.

259622091698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 720588 (or 360295 counting only the distinct ones).

The product of its (nonzero) digits is 8398080, while the sum is 59.

The spelling of 259622091698 in words is "two hundred fifty-nine billion, six hundred twenty-two million, ninety-one thousand, six hundred ninety-eight".