55665615017 has 2 divisors, whose sum is σ = 55665615018. Its totient is φ = 55665615016.

The previous prime is 55665614999. The next prime is 55665615067. The reversal of 55665615017 is 71051656655.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54511042576 + 1154572441 = 233476^2 + 33979^2 .

It is a cyclic number.

It is not a de Polignac number, because 55665615017 - 2²⁶ = 55598506153 is a prime.

It is not a weakly prime, because it can be changed into another prime (55665615067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27832807508 + 27832807509.

It is an arithmetic number, because the mean of its divisors is an integer number (27832807509).

Almost surely, 2^55665615017 is an apocalyptic number.

It is an amenable number.

55665615017 is a deficient number, since it is larger than the sum of its proper divisors (1).

55665615017 is an equidigital number, since it uses as much as digits as its factorization.

55665615017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 945000, while the sum is 47.

The spelling of 55665615017 in words is "fifty-five billion, six hundred sixty-five million, six hundred fifteen thousand, seventeen".