259209961541 has 2 divisors, whose sum is σ = 259209961542. Its totient is φ = 259209961540.

The previous prime is 259209961463. The next prime is 259209961547. The reversal of 259209961541 is 145169902952.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 223961776516 + 35248185025 = 473246^2 + 187745^2 .

It is a cyclic number.

It is not a de Polignac number, because 259209961541 - 2²⁶ = 259142852677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (259209961547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129604980770 + 129604980771.

It is an arithmetic number, because the mean of its divisors is an integer number (129604980771).

Almost surely, 2^259209961541 is an apocalyptic number.

It is an amenable number.

259209961541 is a deficient number, since it is larger than the sum of its proper divisors (1).

259209961541 is an equidigital number, since it uses as much as digits as its factorization.

259209961541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1749600, while the sum is 53.

The spelling of 259209961541 in words is "two hundred fifty-nine billion, two hundred nine million, nine hundred sixty-one thousand, five hundred forty-one".