56105510605553 has 2 divisors, whose sum is σ = 56105510605554. Its totient is φ = 56105510605552.

The previous prime is 56105510605517. The next prime is 56105510605603. The reversal of 56105510605553 is 35550601550165.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43388990569024 + 12716520036529 = 6587032^2 + 3566023^2 .

It is a cyclic number.

It is not a de Polignac number, because 56105510605553 - 2²⁸ = 56105242170097 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 56105510605498 and 56105510605507.

It is not a weakly prime, because it can be changed into another prime (56105510625553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28052755302776 + 28052755302777.

It is an arithmetic number, because the mean of its divisors is an integer number (28052755302777).

Almost surely, 2^{56105510605553} is an apocalyptic number.

It is an amenable number.

56105510605553 is a deficient number, since it is larger than the sum of its proper divisors (1).

56105510605553 is an equidigital number, since it uses as much as digits as its factorization.

56105510605553 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1687500, while the sum is 47.

The spelling of 56105510605553 in words is "fifty-six trillion, one hundred five billion, five hundred ten million, six hundred five thousand, five hundred fifty-three".