427193562617 has 2 divisors, whose sum is σ = 427193562618. Its totient is φ = 427193562616.

The previous prime is 427193562571. The next prime is 427193562643. The reversal of 427193562617 is 716265391724.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 265978464361 + 161215098256 = 515731^2 + 401516^2 .

It is a cyclic number.

It is not a de Polignac number, because 427193562617 - 2³⁰ = 426119820793 is a prime.

It is not a weakly prime, because it can be changed into another prime (427193562017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213596781308 + 213596781309.

It is an arithmetic number, because the mean of its divisors is an integer number (213596781309).

Almost surely, 2^427193562617 is an apocalyptic number.

It is an amenable number.

427193562617 is a deficient number, since it is larger than the sum of its proper divisors (1).

427193562617 is an equidigital number, since it uses as much as digits as its factorization.

427193562617 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3810240, while the sum is 53.

The spelling of 427193562617 in words is "four hundred twenty-seven billion, one hundred ninety-three million, five hundred sixty-two thousand, six hundred seventeen".