912051215909 has 2 divisors, whose sum is σ = 912051215910. Its totient is φ = 912051215908.

The previous prime is 912051215903. The next prime is 912051215953. The reversal of 912051215909 is 909512150219.

It is an a-pointer prime, because the next prime (912051215953) can be obtained adding 912051215909 to its sum of digits (44).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 828651551809 + 83399664100 = 910303^2 + 288790^2 .

It is a cyclic number.

It is not a de Polignac number, because 912051215909 - 2²⁸ = 911782780453 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 912051215909.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (912051215903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 456025607954 + 456025607955.

It is an arithmetic number, because the mean of its divisors is an integer number (456025607955).

Almost surely, 2^912051215909 is an apocalyptic number.

It is an amenable number.

912051215909 is a deficient number, since it is larger than the sum of its proper divisors (1).

912051215909 is an equidigital number, since it uses as much as digits as its factorization.

912051215909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72900, while the sum is 44.

The spelling of 912051215909 in words is "nine hundred twelve billion, fifty-one million, two hundred fifteen thousand, nine hundred nine".