55602566261617 has 2 divisors, whose sum is σ = 55602566261618. Its totient is φ = 55602566261616.

The previous prime is 55602566261591. The next prime is 55602566261633. The reversal of 55602566261617 is 71616266520655.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52920518073201 + 2682048188416 = 7274649^2 + 1637696^2 .

It is a cyclic number.

It is not a de Polignac number, because 55602566261617 - 2³⁹ = 55052810447729 is a prime.

It is not a weakly prime, because it can be changed into another prime (55602566261657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27801283130808 + 27801283130809.

It is an arithmetic number, because the mean of its divisors is an integer number (27801283130809).

Almost surely, 2^{55602566261617} is an apocalyptic number.

It is an amenable number.

55602566261617 is a deficient number, since it is larger than the sum of its proper divisors (1).

55602566261617 is an equidigital number, since it uses as much as digits as its factorization.

55602566261617 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216000, while the sum is 58.

The spelling of 55602566261617 in words is "fifty-five trillion, six hundred two billion, five hundred sixty-six million, two hundred sixty-one thousand, six hundred seventeen".