912565609961 has 2 divisors, whose sum is σ = 912565609962. Its totient is φ = 912565609960.

The previous prime is 912565609939. The next prime is 912565609979. The reversal of 912565609961 is 169906565219.

912565609961 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., 900373254400 + 12192355561 = 948880^2 + 110419^2 .

It is a cyclic number.

It is not a de Polignac number, because 912565609961 - 2⁶ = 912565609897 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 912565609961.

It is not a weakly prime, because it can be changed into another prime (912565609981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 456282804980 + 456282804981.

It is an arithmetic number, because the mean of its divisors is an integer number (456282804981).

Almost surely, 2^912565609961 is an apocalyptic number.

It is an amenable number.

912565609961 is a deficient number, since it is larger than the sum of its proper divisors (1).

912565609961 is an equidigital number, since it uses as much as digits as its factorization.

912565609961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7873200, while the sum is 59.

The spelling of 912565609961 in words is "nine hundred twelve billion, five hundred sixty-five million, six hundred nine thousand, nine hundred sixty-one".