259315552321 has 6 divisors (see below), whose sum is σ = 301652785410. Its totient is φ = 222270473376.

The previous prime is 259315552303. The next prime is 259315552337. The reversal of 259315552321 is 123255513952.

It can be written as a sum of positive squares in only one way, i.e., 259264272400 + 51279921 = 509180^2 + 7161^2 .

It is not a de Polignac number, because 259315552321 - 2⁷ = 259315552193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (259315552351) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2646077016 + ... + 2646077113.

It is an arithmetic number, because the mean of its divisors is an integer number (50275464235).

Almost surely, 2^259315552321 is an apocalyptic number.

It is an amenable number.

259315552321 is a deficient number, since it is larger than the sum of its proper divisors (42337233089).

259315552321 is an equidigital number, since it uses as much as digits as its factorization.

259315552321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5292154143 (or 5292154136 counting only the distinct ones).

The product of its digits is 405000, while the sum is 43.

The spelling of 259315552321 in words is "two hundred fifty-nine billion, three hundred fifteen million, five hundred fifty-two thousand, three hundred twenty-one".