655017809194513 has 2 divisors, whose sum is σ = 655017809194514. Its totient is φ = 655017809194512.

The previous prime is 655017809194423. The next prime is 655017809194559. The reversal of 655017809194513 is 315491908710556.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 581379236805249 + 73638572389264 = 24111807^2 + 8581292^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-655017809194513 is a prime.

It is not a weakly prime, because it can be changed into another prime (655017879194513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327508904597256 + 327508904597257.

It is an arithmetic number, because the mean of its divisors is an integer number (327508904597257).

Almost surely, 2^{655017809194513} is an apocalyptic number.

It is an amenable number.

655017809194513 is a deficient number, since it is larger than the sum of its proper divisors (1).

655017809194513 is an equidigital number, since it uses as much as digits as its factorization.

655017809194513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40824000, while the sum is 64.

The spelling of 655017809194513 in words is "six hundred fifty-five trillion, seventeen billion, eight hundred nine million, one hundred ninety-four thousand, five hundred thirteen".