912258508261 has 2 divisors, whose sum is σ = 912258508262. Its totient is φ = 912258508260.

The previous prime is 912258508241. The next prime is 912258508267. The reversal of 912258508261 is 162805852219.

912258508261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 633982212900 + 278276295361 = 796230^2 + 527519^2 .

It is an emirp because it is prime and its reverse (162805852219) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 912258508261 - 2¹¹ = 912258506213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (912258508267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 456129254130 + 456129254131.

It is an arithmetic number, because the mean of its divisors is an integer number (456129254131).

Almost surely, 2^912258508261 is an apocalyptic number.

It is an amenable number.

912258508261 is a deficient number, since it is larger than the sum of its proper divisors (1).

912258508261 is an equidigital number, since it uses as much as digits as its factorization.

912258508261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 691200, while the sum is 49.

The spelling of 912258508261 in words is "nine hundred twelve billion, two hundred fifty-eight million, five hundred eight thousand, two hundred sixty-one".