259641283681 has 16 divisors (see below), whose sum is σ = 280786431744. Its totient is φ = 238665417984.

The previous prime is 259641283673. The next prime is 259641283691. The reversal of 259641283681 is 186382146952.

It is a cyclic number.

It is not a de Polignac number, because 259641283681 - 2³ = 259641283673 is a prime.

It is a super-2 number, since 2×259641283681² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (259641283691) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3587256 + ... + 3658918.

It is an arithmetic number, because the mean of its divisors is an integer number (17549151984).

Almost surely, 2^259641283681 is an apocalyptic number.

It is an amenable number.

259641283681 is a deficient number, since it is larger than the sum of its proper divisors (21145148063).

259641283681 is a wasteful number, since it uses less digits than its factorization.

259641283681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72840.

The product of its digits is 4976640, while the sum is 55.

The spelling of 259641283681 in words is "two hundred fifty-nine billion, six hundred forty-one million, two hundred eighty-three thousand, six hundred eighty-one".