55536555563 has 2 divisors, whose sum is σ = 55536555564. Its totient is φ = 55536555562.

The previous prime is 55536555523. The next prime is 55536555623. The reversal of 55536555563 is 36555563555.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55536555563 - 2¹⁰ = 55536554539 is a prime.

It is not a weakly prime, because it can be changed into another prime (55536555523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27768277781 + 27768277782.

It is an arithmetic number, because the mean of its divisors is an integer number (27768277782).

Almost surely, 2^55536555563 is an apocalyptic number.

55536555563 is a deficient number, since it is larger than the sum of its proper divisors (1).

55536555563 is an equidigital number, since it uses as much as digits as its factorization.

55536555563 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25312500, while the sum is 53.

The spelling of 55536555563 in words is "fifty-five billion, five hundred thirty-six million, five hundred fifty-five thousand, five hundred sixty-three".