55564335356623 has 2 divisors, whose sum is σ = 55564335356624. Its totient is φ = 55564335356622.

The previous prime is 55564335356573. The next prime is 55564335356627. The reversal of 55564335356623 is 32665353346555.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55564335356623 - 2¹⁷ = 55564335225551 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55564335356627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27782167678311 + 27782167678312.

It is an arithmetic number, because the mean of its divisors is an integer number (27782167678312).

Almost surely, 2^{55564335356623} is an apocalyptic number.

55564335356623 is a deficient number, since it is larger than the sum of its proper divisors (1).

55564335356623 is an equidigital number, since it uses as much as digits as its factorization.

55564335356623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 437400000, while the sum is 61.

The spelling of 55564335356623 in words is "fifty-five trillion, five hundred sixty-four billion, three hundred thirty-five million, three hundred fifty-six thousand, six hundred twenty-three".