12798572770909 has 2 divisors, whose sum is σ = 12798572770910. Its totient is φ = 12798572770908.

The previous prime is 12798572770859. The next prime is 12798572771021. The reversal of 12798572770909 is 90907727589721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10460838799684 + 2337733971225 = 3234322^2 + 1528965^2 .

It is a cyclic number.

It is not a de Polignac number, because 12798572770909 - 2³⁵ = 12764213032541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12798572770409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6399286385454 + 6399286385455.

It is an arithmetic number, because the mean of its divisors is an integer number (6399286385455).

Almost surely, 2^{12798572770909} is an apocalyptic number.

It is an amenable number.

12798572770909 is a deficient number, since it is larger than the sum of its proper divisors (1).

12798572770909 is an equidigital number, since it uses as much as digits as its factorization.

12798572770909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 280052640, while the sum is 73.

The spelling of 12798572770909 in words is "twelve trillion, seven hundred ninety-eight billion, five hundred seventy-two million, seven hundred seventy thousand, nine hundred nine".