12858265261 has 2 divisors, whose sum is σ = 12858265262. Its totient is φ = 12858265260.

The previous prime is 12858265223. The next prime is 12858265291. The reversal of 12858265261 is 16256285821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11934470025 + 923795236 = 109245^2 + 30394^2 .

It is a cyclic number.

It is not a de Polignac number, because 12858265261 - 2¹⁵ = 12858232493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12858265291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6429132630 + 6429132631.

It is an arithmetic number, because the mean of its divisors is an integer number (6429132631).

Almost surely, 2^12858265261 is an apocalyptic number.

It is an amenable number.

12858265261 is a deficient number, since it is larger than the sum of its proper divisors (1).

12858265261 is an equidigital number, since it uses as much as digits as its factorization.

12858265261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 460800, while the sum is 46.

The spelling of 12858265261 in words is "twelve billion, eight hundred fifty-eight million, two hundred sixty-five thousand, two hundred sixty-one".